Get Quote

Shandong Top Leader Plastic Packing CO., LTD

News

  • PVC Rigid Sheet Specifications
    Specifications of PVC Film:1.Thickness: 0.16mm-1mm2.Width: 140mm-1400mm3.Colors:gold,silver,purple,red,green,blue,black, etc.4.Product categoriesof PVC Film: matte,glossy,embossed5. Features: good flatness and toughness, no flaw on when blistering,no air bubble,beautiful color not easy to fade6. Cerfification: SGS, GS7. Applicationof PVC Film: Christmas decoration, printing, sequins, glitter, electronic tray

    2024 04/08

  • Biodegradable transparent composite packaging PLA film
    New Product name Biodegradable transparent composite packaging PLA film Model TLP 501 thickness 35um-80um size custom-made characteristic High transparency Water permeability (g/m2 24hrs at 38℃ 90% RH) 5-50 Oxygen permeability • (GTR (cc/m2 24hrs atm at 23℃ 0% RH) 0.3-3 Sealing temperature ≥140℃ Heat sealing strength ≥10 N Surface temperature resistance 250 ℃ application Packaging of dried food, dried fruit, preserved fruit and condiments and other daily necessities; Sealing film for trays, lunch boxes and drink cups High transparency and stiffness base component Poly Lactic Acid and cellulose Compostable or not Compostable PLA (Polylactic Acid) is a biodegradable and renewable polymer derived from renewable resources such as corn starch or sugarcane. PLA membrane films have gained significant attention in various industries due to their excellent barrier properties, biodegradability, and compatibility with food packaging applications. Here is an overview of the development process for PLA membrane films:1. Raw Material Selection: The first step in developing PLA membrane films is selecting the appropriate raw material, which is typically PLA resin. The resin's molecular weight, crystallinity, and thermal properties are crucial factors influencing the film's performance.2. Film Formation: PLA membrane films can be produced using various methods, including melt extrusion, solvent casting, and solution casting. Melt extrusion involves melting the PLA resin and extruding it through a die to form a continuous film. Solvent casting involves dissolving the PLA resin in a suitable solvent and casting it onto a substrate, followed by solvent evaporation. Solution casting is similar to solvent casting but involves the formation of a solution before casting.3. Film Processing: After film formation, various processing techniques can be employed to enhance the film's properties. These techniques include stretching, annealing, and surface modification. Stretching the film in both the machine and transverse directions improves its mechanical strength and barrier properties. Annealing, which involves heating the film to a specific temperature and then slowly cooling it, enhances its crystallinity and thermal stability. Surface modification techniques like corona treatment or plasma treatment can improve the film's wettability and adhesion.4. Characterization: PLA membrane films need to be thoroughly characterized to ensure they meet the desired specifications. Common characterization techniques include measuring film thickness, mechanical properties (tensile strength, elongation at break), thermal properties (melting temperature, glass transition temperature), barrier properties (water vapor transmission rate, oxygen transmission rate), and surface properties (contact angle, surface energy).5. Optimization: The development process often involves iterative optimization to achieve the desired film properties. Factors like processing parameters, raw material composition, and additives can be modified to optimize the film's performance.6. Applications: Once the PLA membrane film is developed and optimized, it can be used in various applications such as food packaging, biomedical devices, agricultural films, and water purification membranes.

    2024 04/03

  • maroon silver white color opaque pvc rigid sheet film
    Top leader plastic produce mono pvc film, pvc sheet rigid for pharma blister, New raw material supply, product quality and delivery time is guaranteed. Provide small roll samples on the machine. thickness normally from 0.2mm to 0.45mm, width from 110mm to 700mm. Color and roll weight can be customized according to customer's requirement. We're manufacturer in north China.  Pharma grade rigid pvc,  pvc/pvdc films are one of our main products.  Our plant is located in Zibo city, Shandong province,  where Sinopec Qilu Company Ltd.is based-The largest oil refining company in China and even in the world. So the price and supply of raw materials and quality are quite stable and convenient.  Highly resistant to water vapor and oxygen. sale03@sdzlplastic.com

    2024 03/28

  • white opaque PS sheet with single side/both sides PE
    top leader plastic 1~2mm thickness, white opaque PS sheet with single side/both sides PE Lamination, total thickness 1~2mm for producing tray for cosmetic packaging. PS/PE sheet After thermoforming, not sticky between trays. HIPS blister is a blister product processed by vacuum blister and molding process of PS sheet. HIPS sheets have high impact strength and toughness, can be colored at will, have good molding processability, chemical corrosion resistance, and electrical properties, and the impact strength and toughness have been greatly improved. It has good blister processing performance and can be adapted to stretch large and complex blister. PS thermoformed final products are widely used in: food/dairy packaging, cosmetic packaging, etc. sale03@sdzlplastic.com

    2024 03/21

  • What is the technical specifications of PLA film?
    Technical Specifications: Thickness:0.2mm-2mm Width: customization Density:1.24; Tensile Elongation,6.0; Heat Distortion Temperature: (℃) 120 Degradation rate:100% Features: 1. High transparency and glossy; 2.Printable and Vacuum metallization; 3.Anti-fog; 4.Non-toxic and environmentally friendly; Contact: flora@sdtlplastic.cn

    2024 03/14

  • Black white PET antistatic sheet
    Black PET antistatic sheet, recyclable PET RPET sheet, environmentally friendly roll Color, width and thickness can be customized. Uniform color and excellent antistatic effect Does not fade during stamping process and is acid and alkaline resistant Good light-shielding and light-absorbing effects It has good dimensional stability at high temperatures, the secondary shrinkage is close to zero, and it can still maintain excellent flatness after heating. This product has been well used in lens shading, mobile phone button shading, electroacoustic equipment, tape and other industries The matte black light-shielding sheet is made of high-quality black PET as the base material and is specially processed. The black PET material is made of polyethylene terephthalate (PET) and carbon black, which are melted into sheets and biaxially stretched and oriented. have to. Therefore, the matte black light-shielding sheet has excellent tensile properties and dimensional stability. The matte black shading film mainly plays the role of shading and non-reflective. Matt black light-shielding material is mainly used in: A. Light-shielding materials related to optical instruments. Digital cameras: B. Zoom lenses, zooms, viewfinder masks, thermal insulation materials. Cameras: C. Lens zooms, windows (viewfinder masks), and zoom shutters. Single lens reflex camera: D lens aperture and lens spacer. sale03@sdzlplastic.com

    2024 03/07

  • What is the Physical Properties of PLA Film?
    Specification Width 30-150cm Thickness 25-200micron Application Bread bag, lamination film with sugarcane bagasse container, zip lock bag, window film, flower packaging, E-cigarette filtration film. Product Description Introduction:Shandong Top Leader's PLA transparent film is made from corn starch, 100% biodegradable and compostable. The film is strong enough and its performance is nothing worse than traditional plastic film, however our film can be fully degraded into CO2 and water undercomposting condition. Standard thickness is 25 micronApplication aspects:* Fresh flower packaging* Sugarcane lunchbox inner coating film* Laminated with paper or other bio-film * Other packaging that needs transparency Contact:flora@sdtlplastic.cn

    2024 02/29

  • PS for Thermoformed Yogurt Cup
    top leader plastic HIPS sheet white opaquePS sheet is the Polystyrene sheet. They are light, cheap, stable, and can anti the high impact,with long durability and high transparency, they can be processed by heating, bending, screen printing and by vacuum forming.HIPS sheet material include:HIPS blister packaging, HIPS printing film,auti-electronic HIPS  sheet,sand polishing sheet material.   Advantage:2). Easy to paint on3). Easy to print on 4). Easy to assemble with adhesives or solvents 5). Outstanding thermoforming characteristics6). Good machinability7). High impact strength8). Excellent thermoforming9). Excellent printabilty 10).Good scratch resistance sale03@sdzlplastic.com

    2024 02/22

  • natural color pp blister sheet
    Top leader plastic produced, One side is smooth and one side is matte, natural color pp blister sheet. Thickness, width, roll weight and color can be customized according to customers' requirements. High temperature resistant food grade blister rolls, suitable for all kinds of thermoforming packaging. Widely used in video packaging industry, cosmetic packaging industry. Please provide your specific requirements and order quantity, we will give you the most favorable price, and provide samples to support. From sampling to ordering to after-sales service, one-stop service. sale03@sdzlplastic.com

    2024 02/15

  • What are the Product Features of Blistering PVC Rigid Film?
    PVC Blistering Rigid Film  Features:(1) The product has good transparency, good surface gloss, bright color, crystal point, less bubbles, with strong resistance to impact, chemical resistance and easy processing and forming characteristics;(2) This product has good vacuum formability, cool body, folding toughness, no whitening, printing flatness, resistance to twists and turns and other effects;(3) The use of special formula, advanced technology to produce with the factory cold resistance -20℃ impact hard film, through SGS test, suitable for exported to Europe and the United States heavy quality and environmental protection requirements of the packaging;(4) According to customer requirements, products can be given cold resistance, flame retardant, UV protection, anti-static and other special requirementsMaterial Specificaions:1. Roll thickness 0.05-1.0mmWidth 400-2000mm 2. The thickness of the composite film is 0.2-1.0mmWidth 915*1220mm (3*4), 915*1830mm (3*6)  

    2024 02/08

  • Flame retardant PC light diffusion board
    The light transmittance of pc diffuser is more than 70%; through the diffusion of the diffusion board, the entire board surface to form a uniform light-emitting surface without forming a dark area, in the picture will not form a residual image, so that the picture is more realistic, to achieve the visual effect of the whole body crystal clear. PC diffusion board is in the ordinary PC single-layer board on the basis of a special process to deal with the product, is to achieve uniform surface light illumination of the new optical materials, PC diffusion board effect is good or bad, and the use of diffusion particles content and composition is closely related to the diffusion of the lower the content of particles, the higher the rate of light transmittance, the lower the haze, the diffusion board is generally a light white, semi-transparent color, diffusion of the more particles in the content of the higher rate of light transmittance, the lower the haze, diffusion plate is generally a light white, semi-transparent color, diffusion particles the higher content of light transmittance is the lower. The more the content of diffusion particles, the lower the light transmittance, the higher the haze, the diffusion plate is generally milky white, opaque color. Appearance: opal plate is translucent, less crystal points, high light transmission, high gloss, good flatness. Super impact resistance: 250 times the strength of the general glass plate, more than 150 times the tempered glass, 30 times higher than the acrylic plate. So it doesn't shatter when various accidents happen. Better protect your property and life safety. Construction performance: the density of PC is 1.2, the weight is only 1/2 of the glass, so the quality is lighter in construction, reducing costs. Uses: Side-entry LED and fluorescent lamps, panel lights, as the light source for advertising light boxes, notice boards, outdoor billboards, stage effects, LED electronic display, natural lighting ceiling lights. sale03@sdzlplastic.com

    2024 02/01

  • What is PLA plastic material?
    What is PLA plastic material? Today’s serious environmental problem has generated in our society the need to find a new model of production and consumption that is more responsible with the planet. Among others, waste generation has been one of the causes that has led to the fact that today we have to face the problems of climate change. In response this situation, alternative materials to conventional plastic have appeared that can play a fundamental role in the transition to a circular economy. PLA plastic is produced by the polymerization of lactic acid, which can be obtained through anaerobic fermentation of carbohydrates or by chemical synthesis.This acid is obtained in two consecutive steps: Lactic acid synthesis, Polymerization. Primarily, commercial lactic acid is derived from the fermentation of sugars by bacteria. This, therefore, means that the first step for carbohydrate fermentation is the extraction of sugar (glucose, lactose and maltose) or starches produced by corn, sugar beet and potatoes by a milling process. sale02@sdzlplastic.com www.sdzlplastic.com

    2024 01/25

  • Transparent PVC pharmaceutical plastic sheet
    Product description Product introduction PVC has an exceptional chemical resistance and has high mechanical and tensile strength - combined with a high degree of stability which together makes this easily weldable product one of the most versatile general purpose plastics available."Rigid transparence clear vacuuming forming pharma pvc sheet"with excellent features of impact resistence and chemical resistance,According to customer request,we can produce film which are anti-static,UV resistace,smooth and high impact resistance, Can be used for packaging material of toys, tools and gift, folding box.   PVC Rigid sheet is extruded from Environmental friendly compound having smooth & glossy surface finish.

    2024 01/18

  • PET sheet film production process
    PET sheet production process PET sheets are currently used in a wide range of applications on the market. Due to its good performance, it can be used to manufacture various packaging materials, handicrafts or display materials. When manufacturing PET sheets, the raw materials and production process are the key factors that determine the PET sheet. The main factor of material quality, today we will talk about the production process of PET sheets. First of all, before producing PET sheets, we need to slice the raw materials through a crystallization tower and then heat and crystallize them. This step is to arrange the molecules neatly, and then further increase the temperature and dry them. Drying is mainly because at high temperatures, water will degrade the PET sheet, reducing its adhesion and impact strength as the molecular weight decreases. If the raw materials are not dried well, the physical properties of the PET sheet will deteriorate. Next, it can be extruded. After crystallization and drying, PET will transform into a polymer with a clear melting point. It can be extruded into the required shape and thickness through an extruder to ensure smoothness. Then, it can be cooled and shaped. During the shaping process, the three-roller calender needs to keep the head distance at about 8cm to prevent it from affecting the smoothness of the PET sheet. After that, the PET sheet can be obtained through traction and coiling. When purchasing PET sheets, we need to choose a more reliable manufacturer to ensure that the production process meets standards. If you have any questions about PET sheets, please feel free to contact us, we will solve the problem for you in time and provide you with a good solution!

    2023 12/13

  • How to choose a good PVC sheet film manufacturer
    How to choose a good PVC sheet film manufacturer There are many PVC sheet manufacturers, but how to choose the right one? With the increasing use of polyvinyl chloride plastic sheets, we find it increasingly difficult to find a suitable PVC sheet manufacturer. Today I will give you some popular science, hoping it will be helpful. 1. PVC sheet design team PVC sheet manufacturers usually have independent design factories and granulators. The design of PVC sheets directly affects the style of our products. It is not only an assembly line product, it not only reflects our corporate brand, but also displays the image of the product. 2. Quality of PVC sheets Various materials and styles of PVC sheets have many different uses, such as disposable plastic cups, plates, bowls, trays, boxes and other thermoformed products. You can consider the raw materials and then evaluate the products of PVC sheet manufacturers according to the actual situation. Quality makes demand selection. 3. Reputation of PVC sheet manufacturers Generally, we look for manufacturers online, and many of them are new partners. The reputation and warranty of PVC sheet manufacturers have become particularly important. Only with a good reputation can we maintain a good relationship with our customers. Contact : sale@sdzlplastic.com

    2023 12/12

  • The whiteness of PVC film is improved! It turned out that a fluorescent whitening agent was added.
    The whiteness of PVC film is improved! It turned out that a fluorescent whitening agent was added. PVC film can often be seen in our lives. PVC film can be divided into hard film and soft film. PVC fluorescent whitening agent is an additive added by film manufacturers, but how to choose the fluorescent whitening agent to achieve the best results? What a good effect. PVC hard sheet is mainly made of transparent calendered hard sheet. It has excellent features such as corrosion resistance, weather resistance, flame retardancy, easy printing, and easy processing. It can be made into packaging boxes, which are beautiful and generous, and can also be made into Convenient packaging for food, medicine, clothing, toys, etc. The use of PVC film packaging can make packaged items have a distinct sense of reality, which can beautify products, expand publicity, increase selling prices, and promote sales. PVC films are available in transparent and opaque forms. They are generally used for flat laying and are also used for door curtains. Door curtains made of PVC film have special properties and are often used in cold storage, food, chemical and other industries. They can protect against ultraviolet rays and static electricity. How to choose PVC fluorescent whitening agent? We all know that PVC has poor stability and will turn yellow over time, so adding fluorescent whitening agents during the production process is essential. For rigid PVC films, Suban recommends using fluorescent whitening agent FP-127. Its appearance is light yellow powder with a melting point of 219-221°C. It can be used in various PVC products with low dosage, high whiteness, resistance to migration, and high efficiency. Environmental friendly. Contact email: liuqian@sdtlplastic.cn

    2023 12/05

  • Detailed explanation of waterproof PET membrane, you will understand it after reading it
    Detailed explanation of waterproof PET membrane, you will understand it after reading it Waterproof PET membrane is a type of waterproof membrane. It is a waterproof and anti-seepage material with a completely new structure, multi-purpose, and good comprehensive technical performance, which is manufactured on the basis of full research on existing waterproof and anti-seepage membrane products. It is also a waterproof membrane that is widely used nowadays. material. So do you know about the advantages and scope of use of waterproof PET membrane? Features of waterproof PET membrane: 1. No adhesive is needed, just peel off the isolation layer and it can be firmly bonded to the base layer. The construction is convenient and very fast. 2. It has the elasticity of rubber, good elongation, and can effectively handle the deformation and cracking of the base layer. 3. It has good adhesion to the base layer and can effectively handle the deformation and cracking of the base layer. 4. It has self-healing properties, that is, when the waterproof PET membrane is punctured or embedded with hard objects, it will automatically heal with these animals, so it can still maintain good waterproof performance. 5. The construction is safe, does not pollute the environment, the construction is simple and clean, and it is easy to achieve civilized construction on site 6. In addition to the main body material, the surface material polyethylene film also has good waterproofness and high strength (the polyethylene polypropylene composite waterproof membrane is only waterproof with this film), so the waterproofing has double insurance. 7. Corrosion resistance: This coiled material has good acid, alkali and chemical corrosion resistance, and has good aging resistance in various environments. Construction operating procedures Accept and clean the base layer (leveling layer) → Prepare adhesive (prepared as needed) → Process additional layers in complex parts (yin and yang corners, cornices, drains, pipe holes, etc.) → Construction of waterproof layer → Inspection of waterproof layer → Construction acceptance of protective layer back. 1. The base layer (leveling layer) for laying waterproof PET membrane must be cleaned and sprinkled with water to ensure that the base layer is moist. 2. Use polyvinyl alcohol glue containing 5% to 15% of the cement weight to prepare the cement slurry adhesive. The mixing must be uniform, without precipitation or clotting. It can be used without segregation. 3. Before the construction of the main roof waterproofing layer, detailed nodes with concentrated drainage and complex structures should be sealed and additional layers should be pasted. 4. The sealing material is polyether polyurethane. If other sealing materials are used, they should be products that do not contain mineral oil, petroleum jelly and other chemical substances that affect the performance of polyethylene. 5. Additional layers should be added at the corners; Yin and Yang corners should be made into R=20mm arc shapes. 6. The waterproof PET membrane should be laid using the full paving method. The adhesive should be applied evenly on the base layer without exposing the bottom or accumulating. The membrane should be laid immediately after the adhesive is applied. Prevent the time from being too long and affecting the bonding quality. 7. The waterproof PET membrane should not be wrinkled or stretched by force. While laying welt, remove the air and excess adhesive under the roll to ensure tight bonding between the roll and the base layer and between each layer of roll. 8. The overlap width of waterproof PET membrane shall not be less than 100mm. 9. The joints between the upper and lower layers and two adjacent rolls should be staggered by one-third of the width. Application scope of waterproof PET membrane: This kind of waterproof membrane is suitable for waterproofing of industrial and civil building roofs, ground waterproofing, moisture-proof and air-insulating, indoor wall and floor moisture-proofing, toilet waterproofing, water conservancy pools, channels, bridges and culverts waterproofing, anti-seepage, (metallurgical chemical industry pollution prevention, It is necessary to do waterproofing projects such as finished product protection according to the pH value. The upper and lower surfaces are rough, and the non-woven fibers have a random cross structure, forming a three-dimensional mesh. It can be used stably for a long time in the ambient temperature range of -40℃~60℃. It is suitable for bonding with a variety of materials, especially for direct bonding with cement materials during the solidification process. It can be constructed as long as there is no open water. It has good overall performance and high tensile strength. It has strong anti-permeability, good low-temperature flexibility, small expansion coefficient, easy bonding, and small friction coefficient. It can be directly installed in sandy soil and has stable and reliable performance. It is a non-toxic, pollution-free, green and environmentally friendly product. It is suitable for waterproofing of industrial and civil building roofs, ground waterproofing, moisture-proof and air-insulating, indoor wall and floor moisture-proofing, bathroom waterproofing, water conservancy pools, channels, bridges and culverts waterproofing, anti-seepage, metallurgical and chemical pollution prevention and other waterproofing. Waterproof PET membrane is a kind of waterproof membrane with a relatively complicated process. Waterproof PET membrane is a very good waterproof membrane. This kind of waterproof membrane is also relatively expensive, so it cannot be stretched too hard. . When installing this kind of waterproof membrane, you must first determine the size, and the adhesive must be applied evenly, otherwise unevenness will occur. Polyethylene polypropylene multi-layer polymer composite waterproofing membrane is developed based on the new requirements for waterproof and anti-seepage materials in modern waterproofing projects in my country on the basis of full research on existing waterproof and anti-seepage products. This product is a new type of waterproof material made of multi-layered polymer synthetic sheet materials and composite processing using new technologies and new processes. contact email: liuqian@sdtlplastic.cn

    2023 11/30

  • The uses and characteristics of PVC film sheets
    The uses and characteristics of PVC film sheets: PVC sheets are widely used, mainly used to make cards, OEM, iron wire, curtains, water pipes, etc. PVC products can be seen everywhere in daily life. PVC is also used to make imitation leather, which is used in luggage, sports products, such as basketball and football, etc. It is extremely versatile. PVC sheets not only have the characteristics of corrosion resistance, non-flammability, insulation, and anti-oxidation, but also because of the low cost of the sheet itself, PVC sheets have always maintained a large demand in the material market. PVC sheets are high-volume plastics. Products are divided into two types: soft and hard, providing different needs for different occasions. Among them, soft PVC sheets are usually used as raw materials for floors and ceilings, while hard PVC materials are more commonly used in various chemical manufacturing such as corrugated boards and raw materials for doors and windows. PVC materials are also changeable. By adding different additives, the properties of PVC sheets can be changed and used in different situations. Nowadays, my country's PVC sheet R&D technology has reached the forefront of the world. From the previous need to import from abroad to the current self-produced export, it has also opened up the Chinese market for PVC sheets. contact email: liuqian@sdtlplastic.cn

    2023 11/27

  • Common quality problems and solutions in PET sheet production
    Common quality problems and solutions in PET sheet production The PET SHEET produces crystal point impurities. The reason is that the raw material, PET sheet does not produce crystal point impurities. However, impurities or inferior raw materials introduced during the processing due to drying problems and environmental problems lead to the production of crystal point impurity horizontal lines and water lines (orange peel) during the sheet forming process. Wire). Water marks are caused by the material flowing out of the PET sheet extruder die into the calender roll. Because there is no remaining material, the material is not compacted and the sheet surface shows poor smoothness like orange peel. The solution is that there must be residual material visible to the naked eye between the calender rollers, and the residual material rotates evenly. Horizontal lines are a process defect of the extrusion method, just like the water ripples of the calendering method. They are indentations caused by the speed difference between the two calender rollers. The solution is to improve the accuracy of the three-roller speed regulation of the three-roller calender and at the same time improve the accuracy to reduce horizontal lines. PET sheets have yellowing, black spots or impurities, streamlines, and uneven calendering. The main reason for bubbles in the sheet is that the pellets are not completely dry and the moisture content exceeds 0.005%. If moisture is not sufficiently dried, it will penetrate deep into the slice, indicating the formation of molecular bonds or remain trapped deep in the slice. If the drying temperature is too low or the time is too short, the drying effect will be affected. When blisters appear on the sheet, the drying temperature and time should be adjusted immediately. The main reason for the yellowing of the paper is that the drying temperature is too high or the time is too long. The main reason at this time is The measure is to lower the drying temperature and shorten the drying time. Another reason for the yellowing of the sheet is that the melt temperature is too high. At this time, the melt temperature should be quickly lowered. The main reason for the black spots and impurities in the sheet is that the filter is damaged or the PET is extruded. PET decomposition products remaining in the outlet. Contact email: sale@sdzlplastic.com

    2023 11/23

  • Chemical stability and acid and alkali resistance of PVC sheets film
    PVC sheet (polyvinyl chloride) is a flame retardant material with good chemical stability and only produces low tensile cracking internal force. The material's properties also include high strength, high stiffness and hardness, an operating temperature range of -15 degrees to 60 degrees, and it can be welded. PVC sheet features: ① Strong corrosion resistance: suitable for anti-corrosion equipment in the chemical industry. ②Easy to process: cutting, welding, and bending are all very simple. ③High strength, high stiffness and high hardness; ④Good electrical insulation; ⑤Good chemical stability; self-extinguishing; ⑥Low water absorption; easy to stick and paint; ⑦The price is relatively low. PVC sheets film are widely used in food, gifts, clothing, electrical hardware, handicrafts, toys, daily necessities, educational experimental supplies, medical and health supplies, travel products, electrical appliances, electronic original gas parts, agricultural products, auto parts, anti-theft locks and other blister, Compression molding, folding box packaging, stationery production, printing, etc. PVC sheets roll have good chemical stability and acid and alkali resistance. In addition, other advantages of PVC sheets are mainly reflected in the following aspects: ① Good light transmittance, the total light transmittance of the new film is greater than 85%; the light transmittance of crop light is small, only 20% of the 0.3m wavelength passes through, so it is often the material of choice for PVC plastic bags, while polyethylene (PE) greenhouse film After the light condenses through the 60% button-type shed film, the impact on the light transmittance is smaller than that of the PE shed film. However, after a period of use, the light transmittance decreases due to the precipitation of plasticizer and adhesion of dust. ②Good moisture, small thermal conductivity, especially at night, the surface wave radiation transmittance of 6 to 15 meters long is very small, only 20% for PVC plastic bags (more than 70% for polyethylene shed films), the average temperature of the flow and the ground temperature are 1.23 ℃ and 1.05℃ respectively higher than polyethylene shed film. ③Good air tightness, the air permeability of nitrogen, oxygen and carbon dioxide are 3.0, 9.0 and 75 (10-14cm3/mmcm2SPa) respectively, but the air permeability of water vapor (6.9103g/mm24hm2Pa) is better than the LDPE film. ④High tensile strength, good ductility and strong wind resistance. ⑤Good weather resistance, generally PVC cosmetic bags can be used for more than 1 year. ⑥Good welding and bonding, easy to splice and repair.

    2023 11/16

SEE MORE

Email to this supplier

-
SEND

Browse by: All Products | China Suppliers Service is provided by Bossgoo.com

Copyright © 2008-2024 Bossgoo Co., Ltd. All rights reserved.

Your use of this website constitutes acknowledgement and acceptance of our Terms & Conditions