What is the difference between cling film and stretch film?

Many people can’t tell the difference between stretch film and cling film, and even have a wrong understanding. Let’s take a look at the difference between stretch film and cling film. Now let Nanjing Sumino Precision Machinery Co., Ltd. introduce it to you, I hope you like it.

The difference between stretch film and cling film

Some people’s misunderstanding of stretch film is that stretch film is a poor quality cling film, which is divided into two types: PE and PVC. pe is a bit like a plastic bag, the material is cheaper, and the food wrapped in PVC looks brighter. Stretch film is generally a poor quality PVC film. There are too many magazines or not enough transparent and bright. It cannot be used for food packaging, but it cannot be used as a food packaging cling film. It is transparent and food-grade, and can be used for packaging food. The tensile strength is slightly lower. One point, plastic wrap is expensive.

Stretch wrap film (stretch wrap film) is also called elastic film. It can use the self-adhesive elasticity of the film itself to stretch and wrap, relying on the viscoelasticity of the film surface and the tension during use to tightly wrap the goods. To achieve the purpose of protecting commodities.

Cling film is a kind of stretch film, but since it does not need as high self-adhesive performance as stretch film, the amount of polyisobutylene used will occur. Polyisobutylene is mainly used to increase product flexibility and self-adhesiveness.

Cling film is a kind of plastic packaging products commonly used by people. At present, there is mainly one kind of cling film on the market. The first one is polyethylene. This material is mainly used for food packaging, such as fruits, vegetables, etc., including in The semi-finished products purchased from supermarkets use this material; the second type is polyvinyl chloride, which can also be used for food packaging; the third type is polyvinylidene chloride, which is mainly used for packaging of cooked food. Because the plasticizers used in PVC cling film have carcinogenic effects, and the production cost of PVDC is too high, most of the domestic cling film can use PE as a raw material.

Stretch film

Stretch film, elastic film or wrapping film, with self-adhesive properties, is a kind of plastic film that can be stretched and wrapped tightly with adhesive on one or both sides, and the self-adhesive adhesive will not adhere to the packaged items. Surface, only exists on the surface of the film and the film.

In the early days, LLDPE stretched films were mostly blown films, which developed from single-layer to two-layer and three-layer; now, single-layer and double-layer casting are produced by casting method. There is no high-quality stretch film application for three-layer casting in terms of material selection. It has the characteristics of high high, high continuous elongation, high yield point, high transverse tear strength, and good puncture performance.

Plastic wrap

Cling film is a kind of kitchen supplies, mainly used for cooking in the kitchen, holding food, or used to make some materials that can be cleaned easily. Cling film has attracted people's favor because of its convenience, economy and beauty. The raw material of the membrane is PVC, and a large amount of plasticizers such as DEHP must be added. DEHP will ooze out in a medium-high temperature or grease environment; and related scholars pointed out that PVC is the plastic that needs to be eliminated most, and DEHP is an environmental hormone. The content must be limited.

Item introduction

Most of the cling film and commonly used plastic bags on the market are made of ethylene masterbatch. According to the different types of ethylene masterbatch, the cling film can be divided into three categories.

The first is polyethylene, or PE for short. This material is mainly used for food packaging. This material is used for the fruits and vegetables we usually buy, including the semi-finished products purchased in the supermarket;

The second type is polyvinyl chloride, or PVC for short. This material can also be used for food packaging, but it has a certain impact on the safety of the human body;

The third type is polyvinylidene chloride, or PVDC for short, which is mainly used for the packaging of cooked food, ham and other products.

Among the three kinds of plastic wrap, PE and PVDC plastic wrap is safe for the human body and can be used with confidence, while PVC wrap contains carcinogens that are harmful to the human body. Therefore, when purchasing plastic wrap, you should choose PE cling film.

From a physical point of view, the cling film has moderate oxygen permeability and moisture permeability, regulates the oxygen and moisture content around the fresh-keeping products, blocks dust, and prolongs the fresh-keeping period of the food. Therefore, it is necessary to replace different plastic wraps with different foods.

The cling film on the market is roughly divided into two types, one is ordinary cling film, which is suitable for refrigerator preservation; the other is microwave cling film, which can be used for refrigerator preservation and also can be used in microwave oven. Therefore, consumers should pay special attention to the use of

Sumino Stretch film making machine

Description

With our on going innovation and R&D, we have manufactured this CAST PE STRETCH FILM LINE/ Extrusion Machine which can effectively produce/ extrude cast stretch films, cling film, pallet wrap film, masking film, agriculture film, medical film, barrier film for packaging food of very high quality very cost 

Company Profile

Nanjing Sumino Precision Machinery Co., Ltd. is a high-tech enterprise integrating scientific research, production and sales. It has always adhered to the business philosophy of integrity, equality, and customer benefits. In order to better improve the quality of equipment, it has entered a more professional and standardized Production track. We have established independent research and development technologies for seven categories of equipment including plastic sheet material, casting, bi-stretching, non-woven non-woven meltblown cloth, laminating film composite, recycled granulation environmental protection recycling system and coating machine manufacturing system. The center and production department provide a full set of professional technical solutions to meet the special needs of each customer. Among them, the biaxially oriented film manufacturing system includes: BOPP biaxially oriented film manufacturing system, PVC biaxially oriented shrink film production line, PET biaxially oriented film production line, BOPA biaxially oriented film production line, BOPA biaxially oriented film production line, etc.
Company Address: No. 11, Kaifeng Road, Moling Street, Jiangning District, Nanjing City, Jiangsu Province

Sue

International Business Development Department Manager

Nanjing Sumino Precision Machinery Co.,Ltd

Add: Kaituo Road No.11, Jiangning Distract, Nanjing, China.
Tel: +86 025-51839686
Fax: +86 025-51839687
Mob/Wechat/Whatsapp: +86 177 1241 3069

Email: suqian@susumino.com

Web: sumino.en.alibaba.com / www.susumino.com/ www.njsumino.com