TWI649202B - Elastomeric film composite and manufacturing method thereof - Google Patents

Abstract

The present invention is an elastic film composite material comprising: at least one upper surface layer, at least one intermediate layer, and at least a lower surface layer; wherein the surface compatibility difference of each layer material is utilized to perform a co-extrusion process or a lamination process and The extension process is manufactured, and the interfacial surface gap is pulled apart without applying the thermal compression process, so as to achieve the surface structure of the elastic film composite material.

Description

Elastic film composite material and manufacturing method thereof

The invention relates to an elastic film composite material for personal hygiene products or covering materials, in particular to disposable sanitary products, which is characterized in that the difference in material compatibility is used to extend the inter-layer surface gap by an extension procedure, and the structure has no hot pressing point structure. The soft feel of the material and the inter-layer structure of the easily recyclable material are designed to reduce the characteristics of the waste.

Elastomeric film composites mainly use elastic rubber and plastic materials to produce different elastic materials of different appearances to provide different application fields. The elastic film material has the resilient property, can adapt to the elastic changes under various activities of the human body, and has the human body comfort and the fixed reliability of the fit. Therefore, the elastic composite material especially applied to personal sanitary materials is an important subject.

The prior art is directed to the study of elastic nonwoven fabrics, as disclosed in the Republic of China Patent Publication No. 333569, which is a method for manufacturing longitudinal and transverse elastic nonwoven fabrics by thermal and mechanical processing, which is to process thermal bonding thermoplasticity and a part of mixed non-thermoplastic non-woven fabrics. Stretching at a low stretch rate to achieve a softness of fabric quality, a comfortable touch and a high degree of commercial value. The resulting fabric is extremely suitable for use in non-woven fabrics where softness and flexibility are required; Unidirectional elasticity, there are two designs that can achieve mechanical longitudinal or cloth width transverse elasticity; and almost all kinds of non-woven fabrics, as long as they contain more than 70% of thermoplastic fibers, can be applied to the softness and The effect of telescopic elasticity. As disclosed in the Republic of China Patent No. I271455, an elastic composite cloth material comprising at least one non-woven fabric a cloth, at least another cloth, and a tape of elastic threads disposed between the nonwoven fabric and the cloth. The nonwoven fabric is thermally welded to another fabric in the form of a predetermined pattern, and the elastic thread is embedded in the tensioned state at a selected location to join the fusion joint between the nonwoven fabric and the other fabric. This composite material can be used to make sanitary articles, particularly diapers, including diapers.

The prior art has studied the method of forming a surface protrusion by a gear bite. For example, as disclosed in the Republic of China Patent No. I282383, a composite fiber made of polyester and polyolefin core-sheath type composite fiber or completely made of polyester fiber is used. At the bottom of the loop fiber web layer, a layer of molten polymer film is sprayed, and then a felt non-woven fabric is formed by press-fitting with each other, and the felt has high compression resistance.

The prior art is directed to a method for fabricating an elastic nonwoven fabric of an ultrasonic bonding region. As disclosed in the Republic of China Patent No. I405660, the present invention relates to an improved swelling comprising an elastic film which has been ultrasonically bonded to a nonwoven fabric on either side thereof. An elastic laminate that provides bulk, improved softness and feel and provides greater reelability, wherein the joints have a flat domain junction that does not exceed about 30% of the total joint area. In the prior art, it is necessary to press a bonding point or a region on the surface of a film or a non-woven fabric by ultrasonic or hot spot pressing, and then apply an extension procedure to draw the inelastic material with the bonding point as a fixing point, which is also called an activation process, and the bonding point thereof. Because it is extruded into a press-fit point, the position is tight, inelastic, low-absorbent, and hard to the touch, so it needs to be improved.

The creator of this creation has been working in the film composites industry for many years. He is well aware that there are still deficiencies in the process simplification of the elastic film composites. He is committed to the development of elastic film composites and their processes. The invention is an elastic film composite material comprising: at least one upper surface layer, at least one intermediate layer and at least a lower surface layer; wherein the surface compatibility difference of each layer material is used to co-extend the process or the lamination process and the extension process Manufacture, without the thermocompression procedure, the extension procedure is applied to the interlayer gap Pulling open, according to the elastic film composite material, the surface structure of the floating material is obtained. The invention has a simplified process and elastic characteristics which are different from the prior art, and the novelty, the progress and the practical benefit are correct. With regard to the techniques, means and functions of the present invention, a preferred embodiment is described in detail with reference to the drawings, and it is believed that the above objects, structures and features of the present invention can be obtained from an in-depth and specific understanding. .

1a‧‧‧Pre-extended elastic intermediate layer microporous/non-porous film composite

1b‧‧‧Extended elastic intermediate layer microporous/non-porous film composite

101‧‧‧Upper surface layer - unstretched inelastic microporous/non-porous film

102‧‧‧Upper surface layer-extended non-elastic microporous/non-porous film

201‧‧‧Intermediate layer - elastic microporous / non-porous film

301‧‧‧Under surface layer - unstretched inelastic microporous/non-porous film

302‧‧‧Under surface layer-extended non-elastic microporous/non-porous film

2a‧‧‧Unfabricated elastic lower surface layer microporous/non-porous film composite

2b‧‧‧After extension of the elastic lower surface layer microporous/non-porous film composite

202‧‧‧Intermediate layer - unstretched inelastic microporous/non-porous film

203‧‧‧Intermediate-extended non-elastic microporous/non-porous film

303‧‧‧ Lower surface layer - elastic microporous / non-porous film

3a‧‧‧Destructively stretched elastic intermediate layer microporous/non-porous film composite

3b‧‧‧After destructive extension of the elastic lower surface layer microporous/non-porous film composite

304‧‧‧Under surface layer - destructively extended non-elastic microporous/non-porous film

204‧‧‧Intermediate layer - destructively extended non-elastic microporous/non-porous film

4a‧‧‧Microporous/non-porous film composites with non-woven elastic intermediate layers before stretching

4b‧‧‧Microporous/non-porous film composites with elastic intermediate layer non-woven after stretching

205‧‧‧Intermediate layer - elastic non-woven fabric

5a‧‧‧Microporous/non-porous film composites with non-elastic non-woven fabrics in the elastic intermediate layer and the lower layer before stretching

5b‧‧‧Microporous/non-porous film composites with elastic intermediate layers and non-elastic non-woven fabrics

305‧‧‧Under surface layer - unstretched inelastic nonwoven

306‧‧‧Under surface layer-extended non-elastic non-woven fabric

6a‧‧‧Microporous/non-porous film composites with non-elastic non-woven fabrics in front of the elastic intermediate layer and the upper and lower layers

6b‧‧‧Microporous/non-porous film composites with elastic intermediate layer and upper and lower layers of non-elastic non-woven fabric

103‧‧‧Upper surface layer - unstretched non-elastic non-woven fabric

104‧‧‧Upper surface layer - extended non-elastic non-woven fabric

7a‧‧‧Microporous/non-porous film composites with unfolded elastic underlayer and intermediate non-elastic nonwoven fabric

7b‧‧‧Microporous/non-porous film composites with elastic underlayer and intermediate layer inelastic nonwoven

206‧‧‧Intermediate layer - unstretched non-elastic non-woven fabric

207‧‧‧Intermediate layer - extended non-elastic non-woven fabric

8a‧‧‧Microporous/non-porous film composites with unfolded elastic underlayer and upper surface inelastic nonwoven

8b‧‧‧Microporous/non-porous film composites with elastic underlayer and upper surface non-elastic nonwoven

9‧‧‧Microscopy of surface structure of elastic intermediate layer microporous film composites

9a‧‧‧Surface surface structure state with small interfacial surface gap

9b‧‧‧The state of the film surface structure centered on the interfacial surface gap

9c‧‧‧The state of the surface structure of the film with large surface gap between layers

Fig. 1 is a structural view showing the microporous/non-porous film composite of the elastic intermediate layer of the present invention.

Fig. 2 is a structural view showing the microporous/non-porous film composite of the lower surface layer of the present invention.

Figure 3 is a schematic diagram showing the destructively stretched elastic microporous/non-porous film composite of the present invention.

Figure 4 is a structural view showing the microporous/non-porous film composite of the elastic intermediate layer and the non-elastic nonwoven fabric of the lower layer.

Figure 5 is a structural view showing the microporous/non-porous film composite of the elastic intermediate layer and the non-elastic nonwoven fabric of the lower layer.

Figure 6 is a structural view showing the microporous/non-porous film composite of the elastic intermediate layer and the upper and lower layers of the non-elastic nonwoven fabric.

Figure 7 is a structural view showing the microporous/non-porous film composite of the elastic top layer and the intermediate layer non-elastic nonwoven fabric.

Figure 8 shows the microporous/non-porous film composite of the elastic top layer and the upper surface non-elastic non-woven fabric. Material structure diagram.

Fig. 9 is a micrograph showing the surface structure of the elastic intermediate layer microporous film composite of the present invention.

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily appreciate other advantages and effects of the present invention from the disclosure herein. The present invention can also be implemented or applied by various other specific embodiments. The details of the present specification can also be modified and changed without departing from the spirit of the present invention.

First of all, please refer to Figure 1 for the structural diagram of the micro-porous/non-porous film composite of the elastic intermediate layer, showing the non-extended elastic intermediate layer microporous/non-porous film composite 1a, including: upper surface layer - unstretched a non-elastic microporous/non-porous film 101 adjacent to the first surface of the intermediate layer; an intermediate layer-elastic microporous/non-porous film 201 having a first surface and a second surface disposed on the upper surface and the lower surface Between the skin layers; and the lower surface layer - the non-stretched non-elastic microporous film 301. After the unexpanded elastic intermediate layer microporous/non-porous film composite 1a is extended, the structure is changed into a stretched elastic intermediate layer microporous/non-porous film composite 1b, and the external tension is removed after stretching to make the intermediate layer-elastic micro The porous/non-porous film 201 rebounds in a stable state without the elastic layer above the surface layer-extended non-elastic microporous/non-porous film 102 and the lower surface layer-extended non-elastic microporous/non-porous film 302, Then, it is stretched and deformed by the stretching force, and the surface compatibility difference of each layer material is utilized, and the interfacial surface gap is opened by the extension process without the thermal pressing process, and the upper surface layer and the intermediate layer are partially delaminated and the lower layer is The layer is partially delaminated from the intermediate layer, and the interlaminar surface gap size is 0.5 to 1000 μm, so that the elastic film composite material has a floating surface structure. The type of the intermediate layer elastic material is an elastic non-porous film, an elastic microporous film or an elastic perforated film, and Hytrel (Polyester elastomer) and TPU (Thermoplastic) may be selected. Polyurethane), SEBS (Styrene Ethylene Butylene Styrene), SIS (Styrene Butadiene Styrene), SBS (Styrene Butadiene Styrene), Elastic PP (Polypropylene Elastomer), Elastic PE (Polyethylene Elastomer), Elastic Nylon (Polyamide Elastomer) or a mixture of the above materials body. The non-elastic non-porous film of the upper surface layer or the lower surface layer is a non-elastic non-porous film, a non-elastic microporous film or a non-elastic perforated film may be selected from PET (Polyester), PP (Polypropylene), PE (polyethylene), PS ( Polystyrene), Nylon (Polyamide) or a mixture of the above materials. Further, the upper surface layer or the lower surface layer material is preferably a mixture of PP or PP materials. Further, an inorganic powder material such as calcium carbonate, magnesium carbonate, aluminum oxide or titanium oxide in an amount of 1 to 75% by weight is added to the upper surface layer, the intermediate layer or the lower surface layer material. Wherein, the thickness of the upper surface layer accounts for 5~70% of the overall thickness; the thickness of the intermediate layer accounts for 5~70% of the overall thickness; the thickness of the lower surface layer accounts for 5~70% of the overall thickness.

Figure 2 is a structural diagram showing the micro-porous/non-porous film composite of the lower elastic layer of the present invention, illustrating the non-extended elastic lower surface layer microporous/non-porous film composite 2a, including: upper surface layer - unstretched An elastic microporous/non-porous film 101 adjacent to the first surface of the intermediate layer; an intermediate layer-unstretched non-elastic microporous/non-porous film 202 having a first surface and a second surface disposed on the upper surface layer Between the lower layer and the lower surface layer - an elastic microporous/non-porous film 303. After the unexpanded elastic lower surface layer microporous/non-porous film composite 2a is stretched, its structure is changed into a post-elastic elastic lower surface layer microporous/non-porous film composite 2b, and the outer tension is removed after stretching to lower the surface layer. - Elastic microporous/non-porous film 303 rebounds in a stable state without a resilience above the surface layer - extended non-elastic microporous / non-porous film 102 and intermediate layer - extended non-elastic microporous / non-porous film 203, which is stretched and deformed by the stretching force, and utilizes the difference in surface compatibility of the layers of the material, and the stretching process is performed to extend the interlayer gap without the thermal pressing process, and the upper surface layer and the intermediate layer are partially delaminated and The lower layer and the intermediate layer are partially delaminated, and the interlaminar surface gap size is 0.5 to 1000 μm, so that the elastic film composite material has a floating surface structure. The shape of the elastic material of the lower surface layer is an elastic non-porous film, elastic microporous thin For membrane or elastic perforated film, Hytrel, TPU, SEBS, SIS, SBS, elastic PP, elastic PE, elastic Nylon or a mixture of the above materials may be used. The non-elastic non-porous film of the upper surface layer or the intermediate layer may be a non-elastic non-porous film, a non-elastic microporous film or a non-elastic perforated film may be selected from a mixture of PET, PP, PE, PS, Nylon or the like. Further, the upper surface layer or the lower surface layer material is preferably a mixture of PP, elastic PP or the above materials. Further, an inorganic powder material such as calcium carbonate, magnesium carbonate, aluminum oxide or titanium oxide in an amount of 1 to 75% by weight is added to the upper surface layer, the intermediate layer or the lower surface layer material. Wherein, the thickness of the upper surface layer accounts for 5~70% of the overall thickness; the thickness of the intermediate layer accounts for 5~70% of the overall thickness; the thickness of the lower surface layer accounts for 5~70% of the overall thickness.

In order to make the review committee further understand the actual application state of the creation, for example, the structural description of the destructive extension, such as the third figure shows the schematic diagram of the destructively stretched elastic microporous/non-porous film composite material, indicating the elastic intermediate after the destructive extension. The layer microporous/non-porous film composite 3a has a structural change after the stretching process, and the external tension is removed after stretching to make the intermediate layer-elastic microporous/non-porous film 201 rebound in a stable state without the surface of the elastic upper surface. The layer-extended non-elastic microporous/non-porous film 102 and the lower surface layer-destructively stretched non-elastic microporous/non-porous film 304 are stretched and deformed by the stretching force, wherein the lower surface layer-destructive extension The non-elastic microporous/non-porous film 304 is formed by the inclusion of a material having a low elongation property. Furthermore, the destructively stretched elastic lower surface layer microporous/non-porous film composite 3b is also structurally changed after the elongation process, and the external tension is removed after stretching to make the lower surface layer-elastic microporous/non-porous film 303 back. The elastic state of the elastic, non-resilient upper surface layer-extended non-elastic microporous/non-porous film 102 and the intermediate layer-destructively extended non-elastic microporous/non-porous film 204 are stretched by the stretching force The deformation occurs in which the intermediate layer-destructively stretched non-elastic microporous/non-porous film 204 is created by the inclusion of a material having a low elongation property. And utilizing the difference in surface compatibility of each layer of material, the interfacial surface gap is pulled apart without applying a thermal pressing procedure, so that the elastic film composite material becomes a surface structure having a large convexity like a floating material. The type of the intermediate layer elastic material is an elastic non-porous film, an elastic microporous film or an elastic perforated film, which is optional A mixture of Hytrel, TPU, SEBS, SIS, SBS, elastomeric PP, elastomeric PE, elastomeric Nylon or the like. The non-elastic non-porous film of the surface layer or the intermediate layer may be a non-elastic non-porous film, a non-elastic microporous film or a non-elastic perforated film may be selected from a mixture of PET, PP, PE, PS, Nylon or the like. Further, the upper surface layer or the lower surface layer material is preferably a mixture of PP, elastic PP or the above materials. Further, an inorganic powder material such as calcium carbonate, magnesium carbonate, aluminum oxide or titanium oxide in an amount of 1 to 75% by weight is added to the upper surface layer, the intermediate layer or the lower surface layer material. Wherein, the thickness of the upper surface layer accounts for 5~70% of the overall thickness; the thickness of the intermediate layer accounts for 5~70% of the overall thickness; the thickness of the lower surface layer accounts for 5~70% of the overall thickness.

Another embodiment, for example, Fig. 4 is a structural view of a microporous/non-porous film composite material of the present elastic intermediate layer and the underlying layer non-elastic nonwoven fabric, illustrating the microporous/non-porous film composite material 4a of the elastic intermediate layer non-woven fabric before stretching. Comprising: an upper surface layer - an unstretched non-elastic microporous/non-porous film 101 adjacent to the first surface of the intermediate layer; an intermediate layer - an elastic nonwoven fabric 205 having a first surface and a second surface, disposed on Between the upper surface layer and the lower surface layer; and a lower surface layer - an unstretched non-elastic microporous/non-porous film 301. After the microporous/non-porous film composite 4a which is not stretched before the elastic intermediate layer is stretched, its structure is changed into a microporous/non-porous film composite 4b which is stretched after the elastic intermediate layer is not stretched, and the external tension is removed after stretching. The layer-elastic nonwoven fabric 205 rebounds in a stable state without the elastic layer above the surface layer-extended non-elastic microporous/non-porous film 102 and the lower surface layer-extended non-elastic microporous/non-porous film 302. Stretching and deformation by stretching force, and utilizing the difference in surface compatibility of each layer of material, the interfacial surface gap is opened by a stretching procedure without a thermocompression procedure, and the upper surface layer and the intermediate layer are partially delaminated and the lower layer is The intermediate layer exhibits partial delamination, and the interlaminar surface gap size is 0.5 to 1000 μm, so that the elastic film composite material becomes a film surface structure with a floating material. The type of the intermediate layer elastic material is an elastic non-woven fabric, and a mixture of Hytrel, TPU, SEBS, SIS, SBS, elastic PP, elastic PE, elastic Nylon or the like may be selected. The surface layer or the lower surface layer is made of a non-elastic non-porous film, a non-elastic microporous film or an inelastic perforated film. Use a mixture of PET, PP, PE, PS, Nylon or a combination of the above. Further, the upper surface layer or the lower surface layer material is preferably a mixture of PP or PP materials. Further, an inorganic powder material such as calcium carbonate, magnesium carbonate, aluminum oxide or titanium oxide in an amount of 1 to 75% by weight is added to the upper surface layer or the lower surface layer material. Wherein, the thickness of the upper surface layer accounts for 5~70% of the overall thickness; the thickness of the intermediate layer accounts for 5~70% of the overall thickness; the thickness of the lower surface layer accounts for 5~70% of the overall thickness.

Figure 5 is a structural diagram showing the microporous/non-porous film composite of the elastic intermediate layer and the non-elastic nonwoven fabric of the lower layer, showing the microporous/non-porous film composite of the elastic intermediate layer and the non-elastic nonwoven fabric before the extension. 5a, comprising: an upper surface layer-unstretched non-elastic microporous/non-porous film 101 adjacent to the first surface of the intermediate layer; an intermediate layer-elastic microporous/non-porous film 201 having a first surface and The second surface is disposed between the upper surface layer and the lower surface layer; and the lower surface layer - the non-stretched non-elastic non-woven fabric 305. The microporous/non-porous film composite 5a, which is not stretched before the elastic intermediate layer and the non-elastic non-woven fabric of the lower layer, is subjected to a stretching procedure, and its structure is changed into a microporous/nonporous film composite of the elastic intermediate layer and the non-elastic nonwoven fabric under the extension. The material 5b, after stretching, removes the external tension to cause the intermediate layer-elastic microporous/non-porous film 201 to rebound in a stable state without the elastic layer above the surface layer-extended non-elastic microporous/non-porous film 102 and the lower surface The layer-extended non-elastic non-woven fabric 306 is stretched and deformed by the stretching force, and the difference in surface compatibility of the materials of each layer is utilized, and the inter-layer surface gap is opened without the thermal pressing procedure, and the upper surface layer is opened. The intermediate layer is partially delaminated and the lower layer and the intermediate layer are partially delaminated, and the interlaminar surface gap size is 0.5-1000 micrometers, so that the elastic film composite material becomes a double-film surface structure and a non-woven fabric. Surface effect. The type of the intermediate layer elastic material is an elastic non-porous film, an elastic microporous film or an elastic perforated film, and a mixture of Hytrel, TPU, SEBS, SIS, SBS, elastic PP, elastic PE, elastic Nylon or the like may be selected. The non-woven fabric, non-elastic non-porous film, non-elastic microporous film or inelastic perforated film of the surface layer or the lower surface layer may be selected from a mixture of PET, PP, PE, PS, Nylon or the like. Further, the upper surface layer or the lower surface layer material is preferably a mixture of PP or PP materials. Further, an inorganic powder material such as calcium carbonate, magnesium carbonate, aluminum oxide or titanium oxide in an amount of 1 to 75% by weight is added to the upper surface layer or the intermediate layer material. Wherein, the thickness of the upper surface layer accounts for 5~70% of the overall thickness; the thickness of the intermediate layer accounts for 5~70% of the overall thickness; the thickness of the lower surface layer accounts for 5~70% of the overall thickness.

Figure 6 is a structural diagram showing the microporous/non-porous film composite of the elastic intermediate layer and the upper and lower layers of the non-elastic nonwoven fabric, illustrating the microporous/non-porous film composite material of the elastic intermediate layer and the upper and lower layers of the non-elastic nonwoven fabric before stretching. 6a, comprising: an upper surface layer - an unstretched non-elastic nonwoven fabric 103 adjacent to the first surface of the intermediate layer; an intermediate layer - an elastic microporous / non-porous film 201 having a first surface and a second surface, Between the upper surface layer and the lower surface layer; and the lower surface layer - the non-stretched non-elastic nonwoven fabric 305. The microporous/non-porous film composite 6a, which is not stretched before the elastic intermediate layer and the upper and lower layers of the non-elastic non-woven fabric, is subjected to a stretching procedure, and its structure is changed into a microporous/nonporous film composite of the elastic intermediate layer and the upper and lower layers of the non-elastic nonwoven fabric. Material 6b, after stretching, removes external tension so that the intermediate layer-elastic microporous/non-porous film 201 rebounds in a stable state without the elastic layer above the surface layer-extended non-elastic non-woven fabric 104 and the lower surface layer-extension The elastic non-woven fabric 306 is stretched and deformed by the stretching force, and the difference in surface compatibility of the materials of the respective layers is utilized, and the inter-layer surface gap is opened by the stretching procedure without the thermal pressing process, and the upper surface layer and the intermediate layer are partially removed. The layer and the lower layer and the intermediate layer are partially delaminated, and the interlaminar surface gap size is 0.5 to 1000 μm, so that the elastic film composite material has a surface effect of a double-sided fluffy non-woven fabric. The type of the intermediate layer elastic material is an elastic non-porous film, an elastic microporous film or an elastic perforated film, and a mixture of Hytrel, TPU, SEBS, SIS, SBS, elastic PP, elastic PE, elastic Nylon or the like may be selected. The type of the upper surface layer or the lower surface layer non-elastic material is a non-woven fabric, and a mixture of PET, PP, PE, PS, Nylon or the like may be selected. Further, the upper surface layer or the lower surface layer material is preferably a mixture of PP or PP materials. Wherein, the thickness of the upper surface layer accounts for 5~70% of the overall thickness; the thickness of the intermediate layer accounts for 5~70% of the overall thickness; the thickness of the lower surface layer accounts for 5~70% of the overall thickness.

Figure 7 is a structural diagram showing the microporous/non-porous film composite of the elastic underlayer and the intermediate layer of non-elastic nonwoven fabric, illustrating the microporous/non-porous film composite of the elastic underlayer and the intermediate non-elastic nonwoven before stretching. 7a, comprising: an upper surface layer - an unstretched non-elastic microporous/non-porous film 101 adjacent to the first surface of the intermediate layer; an intermediate layer - an unstretched non-elastic nonwoven fabric 206 having a first surface and The two surfaces are disposed between the upper surface layer and the lower surface layer; and the lower surface layer - an elastic microporous/non-porous film 303. The microporous/non-porous film composite 7a, which is not stretched before the elastic first layer and the intermediate layer, is inferior to the microporous/nonporous film composite of the elastic lower surface layer and the intermediate layer non-elastic non-woven fabric. Material 7b, after stretching, removes external tension so that the lower surface layer-elastic microporous/non-porous film 303 rebounds in a stable state without the elastic layer above the surface layer-extended non-elastic microporous/non-porous film 102 and the middle The layer-extended non-elastic non-woven fabric 207 is stretched and deformed by the stretching force, and the difference in surface compatibility of the materials of each layer is utilized, and the inter-layer surface gap is opened by the extension process without the thermal pressing process, and the upper surface layer is The intermediate layer is partially delaminated and the lower layer and the intermediate layer are partially delaminated, and the interlaminar surface gap size is 0.5 to 1000 μm, so that the elastic film composite material becomes a large convex surface structure with a floating material. The elastic material of the lower surface layer is an elastic non-porous film, an elastic microporous film or an elastic perforated film, and a mixture of Hytrel, TPU, SEBS, SIS, SBS, elastic PP, elastic PE, elastic Nylon or the like may be selected. . The upper surface layer or the intermediate layer non-elastic material may be a non-woven fabric, a non-elastic non-porous film, a non-elastic microporous film or a non-elastic perforated film, and a mixture of PET, PP, PE, PS, Nylon or the like may be used. Further, the upper surface layer or the lower surface layer material is preferably a mixture of PP, elastic PP or the above materials. Further, an inorganic powder material such as calcium carbonate, magnesium carbonate, aluminum oxide or titanium oxide in an amount of 1 to 75% by weight is added to the upper surface layer or the lower surface layer material. Wherein, the thickness of the upper surface layer accounts for 5~70% of the overall thickness; the thickness of the intermediate layer accounts for 5~70% of the overall thickness; the thickness of the lower surface layer accounts for 5~70% of the overall thickness.

Figure 8 shows the microporous/non-porous thin layer of the elastic underlayer and the upper surface of the inelastic non-woven fabric. A structural view of a film composite material, illustrating a microporous/non-porous film composite material 8a of an unfolded elastic underlayer and an upper surface non-elastic nonwoven fabric, comprising: an upper surface layer-unstretched inelastic nonwoven fabric 101, which is the same as the intermediate layer a surface adjacent; an intermediate layer - an unexpanded non-elastic microporous/non-porous film 202 having a first surface and a second surface disposed between the upper surface layer and the lower surface layer; and a lower surface layer - elastic microporous / Non-porous film 303. The microporous/non-porous film composite 8a, which is not stretched before the elastic top layer and the upper surface non-elastic non-woven fabric, is subjected to a stretching procedure, and its structure is changed into a microporous/nonporous film composite of the elastic lower surface layer and the upper surface inelastic nonwoven fabric. Material 8b, after stretching, removes external tension so that the lower surface layer-elastic microporous/non-porous film 303 rebounds in a stable state without the elastic layer above the surface layer-extended non-elastic nonwoven fabric 104 and the intermediate layer-extension The elastic microporous/non-porous film 203 is stretched and deformed by the stretching force, and the difference in surface compatibility of the materials of each layer is utilized, and the interfacial surface gap is opened by the stretching procedure without the thermal pressing process, and the upper surface layer is The intermediate layer is partially delaminated and the lower layer and the intermediate layer are partially delaminated, and the interlaminar surface gap size is 0.5 to 1000 μm, so that the elastic film composite material has a double-sided structure with a fluffy non-woven fabric and an elastic film. The elastic material of the lower surface layer is an elastic non-porous film, an elastic microporous film or an elastic perforated film, and a mixture of Hytrel, TPU, SEBS, SIS, SBS, elastic PP, elastic PE, elastic Nylon or the like may be selected. . The upper surface layer or the intermediate layer non-elastic material may be a non-woven fabric, a non-elastic non-porous film, a non-elastic microporous film or a non-elastic perforated film, and a mixture of PET, PP, PE, PS, Nylon or the like may be used. Further, the upper surface layer or the lower surface layer material is preferably a mixture of PP, elastic PP or the above materials. Further, the intermediate layer or the lower surface layer material is added with an inorganic powder material such as calcium carbonate, magnesium carbonate, aluminum oxide or titanium oxide in an amount of 1 to 75% by weight. Wherein, the thickness of the upper surface layer accounts for 5~70% of the overall thickness; the thickness of the intermediate layer accounts for 5~70% of the overall thickness; the thickness of the lower surface layer accounts for 5~70% of the overall thickness.

The above embodiment is a method for manufacturing an elastic film composite material, comprising: a total extrusion process, feeding a plurality of raw materials by using a multi-layer co-mold die by a plurality of extruders; and an extension process, a total of the multilayer film The wheel speed difference or the calendering method produces the interfacial surface gap; and the surface compatibility difference of each layer material is utilized, and the interfacial surface gap is opened without applying the thermal pressing procedure, so that the elastic film composite material becomes a cloth floating material. As a surface structure. Another method for manufacturing an elastic film composite material comprising: at least one coating process for thermally melting a thermoplastic material and simultaneously bonding to a non-woven substrate; and a stretching process for a plurality of layers The film is subjected to inter-layer surface gap by wheel speed difference or calendering method; and the difference in surface compatibility of each layer material is utilized, and the inter-layer surface gap is opened by a stretching procedure without a thermocompression procedure, so that the elastic film composite material becomes The surface structure of the fabric floats. Among them, the extension process is carried out by means of wheel speed difference drafting, stretching, pressure roller rolling or gear meshing. The extension program is selected to select the machine direction (MD, Machine Direction), the lateral direction (CD, Cross Direction) or the two-way extension. The basis weight of the elastic film composite material before the extension process is between 30 and 100 gsm. The elastic film composite has a basis weight of between 30 and 500 gsm after the extension process. The extension process is applied to the extension process with non-destructive and destructive properties such that the film of the elastic film composite is non-ruptured or broken. The extension procedure is applied between ≧0 times and ≦10 times. The extended state moisture permeability (MVT, ASTM E96-BW) of the composite after application of the elongation procedure is between ≧50 g/m ² .24 hrs to ≦15000 g/m ² .24 hrs. The extended state water pressure resistance (WRS, AATCC 127) of the composite after application of the elongation procedure is between ≧12 mmH ₂ O and ≦2000 mmH ₂ O. The overall thickness of the composite after application of the elongation procedure is between ≧10 microns and ≦2000 microns. The tensile strength (ASTM-D5034, Grab grip) of the composite after the extension procedure is between ≧1Kgf and ≦160Kgf; the elongation (ASTM-D5034, Grab) is between ≧40% and ≦600 %between.

Fig. 9 is a micrograph showing the surface structure of the elastic intermediate layer microporous film composite. The surface structure state of the film with small interlaminar surface gap is 9a. The surface bulk is small and smooth and fine, and the process can be controlled and extended. The extension ratio of the program is small, or the compatibility of the materials between the layers is better, so that the interfacial surface gap is not easily separated; the film surface junction with the interlayer gap between the layers is intermediate. In the state of 9b, the surface bulkiness is slightly larger and smoother and slightly finer, and the expansion ratio of the adjustable extension process in the process is increased, or the compatibility of the materials between the layers is poor, so that the interfacial surface gap exhibits phase separation. The surface structure state of the film with a large gap between the layers is 9c, the surface has a large bulkiness and a concave and convex surface state, the expansion ratio of the adjustable extension process in the process is large, or the compatibility of the materials between the layers is poor, so that the interlayer gap is easy. Phase separator.

The invention relates to an elastic film composite material comprising: at least one upper surface layer, at least one intermediate layer and at least one lower surface layer; and using the difference in surface compatibility of each layer material, the extension procedure is applied without a thermocompression procedure The interlaminar surface gap is pulled apart to cause the elastic film composite to be a floating surface structure. According to the surface type characteristics of the special elastic film composite material, the invention is different from the prior art, and the novelty, the progress and the practical benefit are correct. Therefore, the lack of conventional knowledge can be effectively improved, and the utility is quite practical.

In view of the above, the specific structure disclosed in the present embodiment can indeed provide the application of the differentiated special elastic film composite material, and in terms of its overall structure, it has not been seen in the similar products, and has not been disclosed before the application. Cheng has already complied with the statutory requirements of the Patent Law and has filed an invention patent application in accordance with the law.

However, the above is only a preferred embodiment of the present invention. When it is not possible to limit the scope of the creation of the present invention, that is, the equivalent changes and modifications made by the applicant in accordance with the scope of the patent application and the content of the creation specification are all It should remain within the scope of this creation patent.

Claims (10)

An elastic film composite material comprising: at least one upper surface layer adjacent to a first surface of the intermediate layer; at least one intermediate layer having a first surface and a second surface disposed between the upper surface layer and the lower surface layer At least one surface layer adjacent to the second surface of the intermediate layer; and utilizing the difference in surface compatibility of the materials of each layer, the interfacial surface gap is opened without the thermal pressing procedure, and the interlaminar surface gap size is It is 0.5 to 1000 μm, so that the elastic film composite material has a floating surface structure. The elastic film composite material according to claim 1, wherein the upper surface layer, the intermediate layer or the lower surface layer is an elastic material, and the elastic material is in the form of an elastic non-porous film, an elastic microporous film or an elastic perforated film. The elastic material is a mixture of Hytrel, TPU, SEBS, SIS, SBS, elastic PP, elastic PE, elastic Nylon or the like. The elastic film composite material according to claim 1, wherein the upper surface layer, the intermediate layer or the lower surface layer is a non-elastic material, and the non-elastic material is in a non-elastic non-porous film, a non-elastic microporous film or a non-elastic material. Elastic perforated film; the non-elastic material is selected from a mixture of PET, PP, PE, PS, Nylon or the like. The elastic film composite material according to claim 1, wherein the upper surface layer, the intermediate layer or the lower surface layer material is added with an inorganic powder material in a weight percentage of 1 to 75%; and the inorganic powder material is selected from calcium carbonate and magnesium carbonate. , alumina or titanium oxide. The elastic film composite material according to claim 1, wherein the upper surface layer and the middle layer presentation portion are The delamination layer, the lower layer and the intermediate layer exhibit partial delamination and at least one delamination phenomenon. The elastic film composite material according to claim 1, wherein the thickness of the upper surface layer, the thickness of the intermediate layer or the thickness of the lower surface layer is between 5 and 70% of the total thickness. The invention relates to a method for manufacturing an elastic film composite material, comprising: a total extrusion process, feeding a plurality of raw materials by using a multi-layer co-mold die by a plurality of extruders; and an extension process, a total of multi-layer film passing speed difference or The calendering method produces interlayer gaps, and the stretching ratio is non-destructive and destructive, so that the film of the elastic film composite material is non-ruptured or broken, and the stretching ratio is between ≧0 times and ≦10 times; and each layer material is utilized. The difference in surface compatibility is to extend the interlaminar surface gap without the thermal compression process, so that the elastic film composite material becomes a floating surface structure of the fabric, and the composite material is applied after the extension process. The overall thickness is between ≧10 microns and ≦2000 microns. The method for manufacturing an elastic film composite material according to claim 7, wherein the basis weight of the elastic film composite material before the stretching process is between 30 and 100 gsm; the basis weight of the elastic film composite material after the extension process is applied Between 30~500gsm. The method for producing an elastic film composite according to claim 7, wherein the extended state moisture permeability (MVT, ASTM E96-BW) of the composite material after the extension process is between ≧50g/m ² .24hrs to ≦15000g/ Between m ^{2 and} 24 hrs, the water pressure resistance (WRS, AATCC 127) is between ≧12 mmH ₂ O and ≦2000 mmH ₂ O. The method for producing an elastic film composite according to claim 7, wherein the extension program is applied The tensile strength of the composite material (ASTM-D5034, Grab grip) is between ≧1Kgf and ≦160Kgf, and the elongation (ASTM-D5034, Grab grip) is between ≧40% and ≦600%.