Hyundai Seiko EVOH series multilayer co-extruded composite film
DATE：2020/3/27 9:51:19 / READ： / SOURCE：This station
Hyundai Seiko EVOH series multilayer co-extruded composite film
1Prevent EVOH from affecting its gas barrier properties due to moisture absorption. It is usually compounded with polyolefin with good water resistance to form a multilayer co-extruded composite film. Its typical structures are LDPE / EVOH / LDPE, LDPE / EVOH / EVA, PP / EVOH. / PE etc. However, due to the poor bonding between EVOH and the polyolefin layer, an adhesive layer must be inserted between the layers, thus forming a 5-layer structure such as PP∥ AD / EVOH / AD / PP (AD stands for adhesive layer resin). Want to dense 2) EVOH and nylon composite EVOH and nylon have a very good affinity, can be miscible in any proportion, so excellent adhesion. In coextrusion, there is no need for an adhesive layer between the two layers. The brittleness of EVOH is enhanced by nylon to produce a strong and tough composite film. For thermoforming sheets, the glass transition temperature of EVOH is high, so it can be used after thermoforming. Keep shape, www.handern.com Laminating equipment
2 In addition, for nylon, residual deformation is easy to occur during heating molding, the glass transition temperature is reduced after moisture absorption, it is easy to generate a large shrinkage stress, it is difficult to maintain the molding shape, and it is correspondingly strengthened when combined with EVOH, and it is also suitable for the requirements of molding processing , Www.handern.com Composite film equipment
3.2 PA / PVOH / OPA / EVOH / LDPE, PA / EVOH / LLDPE, etc. The structure and main application of Han Yizhi's EVOH-based gas barrier co-extruded composite film are shown in the former female co-op, which is the same as the one shown in Table 7-5-3. Among them, deep-ham vacuum packaging such as thin ham is most commonly used. , Nearly half of the total. The second is impregnation, and water-containing foods such as sauces are meat-rich processed products and skin-packed again. As a special application product, it is a composite substrate, which is compounded with various films, foamed PS, paper, wood, steel plates, aluminum plates, metal foils, etc. by printing. www.handern.com Composite film equipment
www.handern.com Composite film equipment
1Prevent EVOH from affecting its gas barrier properties due to moisture absorption. It is usually compounded with polyolefin with good water resistance to form a multilayer co-extruded composite film. Its typical structures are LDPE / EVOH / LDPE, LDPE / EVOH / EVA, PP / EVOH. / PE etc. However, due to the poor bonding between EVOH and the polyolefin layer, an adhesive layer must be inserted between the layers, thus forming a 5-layer structure such as PP∥ AD / EVOH / AD / PP (AD stands for adhesive layer resin). Want to dense 2) EVOH and nylon composite EVOH and nylon have a very good affinity, can be miscible in any proportion, so excellent adhesion. In coextrusion, there is no need for an adhesive layer between the two layers. The brittleness of EVOH is enhanced by nylon to produce a strong and tough composite film. For thermoforming sheets, the glass transition temperature of EVOH is high, so it can be used after thermoforming. Keep shape, www.handern.com Laminating equipment
2 In addition, for nylon, residual deformation is easy to occur during heating molding, the glass transition temperature is reduced after moisture absorption, it is easy to generate a large shrinkage stress, it is difficult to maintain the molding shape, and it is correspondingly strengthened when combined with EVOH, and it is also suitable for the requirements of molding processing , Www.handern.com Composite film equipment
3.2 PA / PVOH / OPA / EVOH / LDPE, PA / EVOH / LLDPE, etc. The structure and main application of Han Yizhi's EVOH-based gas barrier co-extruded composite film are shown in the former female co-op, which is the same as the one shown in Table 7-5-3. Among them, deep-ham vacuum packaging such as thin ham is most commonly used. , Nearly half of the total. The second is impregnation, and water-containing foods such as sauces are meat-rich processed products and skin-packed again. As a special application product, it is a composite substrate, which is compounded with various films, foamed PS, paper, wood, steel plates, aluminum plates, metal foils, etc. by printing. www.handern.com Composite film equipment
www.handern.com Composite film equipment
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