TWM626301U - Combination article of foam and reinforced core - Google Patents

Abstract

The combination of foam and reinforced core provided by this creation is a sheet-like reinforced core with many perforations, which is completely covered by the foam, and at the same time, the foam also exists in the perforations, Then, between the inside of the foam and the reinforcing core, the foams located on both sides of the reinforcing core can be connected by the partial foams existing in the perforations, so that the foams are closely attached On the reinforced core, the problem that the foam and the reinforced core are difficult to bond with each other because there is no bonding means using an adhesive or they are different from each other, resulting in easy peeling from each other, resulting in poor quality And the lack of long service life.

Description

Combination of foam and reinforced core

This creation is related to polymer molding processing technology, especially about a combination of foam and reinforced core.

In the previous case of US6032388, a technical content of using a sheet of non-foamed material as a sole tread is disclosed, which discloses that a plurality of perforations are arranged on the sheet, and a mold is used to provide a shape, and a wear-resistant material is used to form a plurality of, Through the perforations and protruding anchoring portions on both sides of the sheet, the sheet material and most of the anchoring portions attached to it are attached to the bottom surface of the foam sole by an adhesive, so as to as the tread of the shoe.

Although the open-top technique can provide physical properties different from the foamed material by the sheet material, it still requires the use of an adhesive to bond the sheet material to the sole element, which is not good.

The main purpose of this creation is to provide a combined product of foam and reinforced core, which can eliminate the use of adhesives to complete the combination between the foam and the reinforced core, and further improve the strength of the combination between them.

The reason is that, in order to achieve the above purpose, the combination of the foam and the reinforced core provided by this creation is to make a sheet-like reinforced core with many perforations completely covered by the foam, and at the same time make the foam. It also exists in the perforations, so that between the inside of the foam and the reinforcing core, the foams on both sides of the reinforcing core can be connected by the partial foam existing in the perforations, so as to connect the foams on both sides of the reinforcing core. Make the foam closely fit on the reinforcing core, to avoid the problem that the foam and the reinforcing core are difficult to bond to each other through bonding because there is no bonding means using adhesives or they are heterogeneous. Easy to peel off, resulting in poor quality and short service life.

On the other hand, the method for combining the foam and the reinforced core provided by this creation is used to make the above-mentioned combined product of the foam and the reinforced core, and its main technical feature is that, in order to make the foam to be A complete covering is formed on the peripheral side of the reinforcing core. When molding is performed by a mold, the reinforcing core needs to be located in the mold chamber defined by the mold, and the peripheral side of the reinforcing core is connected to the mold. The peripheral side walls of the chamber are all separated from each other, and then the molten polymer raw material containing the foaming agent is injected into the mold chamber for foaming and molded by the mold chamber. In the process of entering the mold chamber and foaming, the polymer raw material can be simultaneously foamed and molded in most of the perforations of the reinforcing core, so that the molded foam and the reinforcing core are structurally staggered. Fit closely to each other for a good bonding effect.

In order to maintain a proper interval between the reinforcing core and the peripheral side chamber wall of the mold chamber, the mold further includes a plurality of first positions protruding from the chamber wall in the mold chamber and in the opposite direction of gravity. Protruding points, so that the reinforcing core is placed on the free ends of the first positioning protrusions, so as to ensure the distance between the reinforcing core and the wall of the mold chamber.

In order to further stabilize the position of the reinforcing core in the mold chamber, a plurality of second positioning protrusions may protrude from the wall of the mold chamber on the other side of the first positioning protrusion, and make these The distance between the first positioning protrusions and the free ends of the second positioning protrusions is equal to the thickness of the sheet of the reinforcement core, so that the reinforcement core can be sandwiched between the first positioning protrusions and the first positioning protrusions. between the two positioning bumps.

The above-mentioned first positioning protrusion and second positioning protrusion may be fixed or retractable movable pin cylinders.

In addition to the above-mentioned positioning technology for the reinforcing core, an unfoamed embryo body pre-molded with a raw material having the same matrix as the polymer raw material can also be placed in the mold chamber, and the embryo The surface of the body supports the reinforced core, so that the reinforced core can be separated from the chamber wall of the mold chamber, so as to achieve the same positioning effect as the above-mentioned positioning protrusions, and can be used for hair molding on the polymer raw material. At the same time, under the condition of the same matrix, chemical bonds can be formed between the polymer raw material and the embryo to obtain a good conjugate structure.

Hereinafter, a preferred embodiment of the present invention and the accompanying drawings are used for further description.

In the method (10) for combining the foam and the reinforcement core disclosed in a preferred embodiment of the present invention, the reinforcement core (20) used is as shown in FIG. 1, and the reinforcement core (20) It has a thin sheet body (21) and a plurality of perforations (22) arranged on the sheet body (21), wherein, based on the reinforcing core (20), the reinforcing foam is provided with a foam structure to provide elasticity. The lack of strength is generally produced in the state. For this reason, the material of the sheet (21) can be selected according to actual needs, such as thermoplastic polymer materials, thermosetting polymer materials, elastic polymer materials or composite materials such as carbon fiber. The manufactured non-foamed articles have higher hardness than ordinary foams to meet the purpose of reinforcement; and the size of the apertures of the perforations (22) is not sufficient for the sheet body (21) The range that the strength has a significant impact is limited. Generally speaking, these perforations (22) only need to be small holes, which are enough for the entry of polymer raw materials, and can meet the needs of this creation. Of course, these perforations (22) (22) It can also be provided as large and small holes with different aperture sizes, and arranged according to the reinforcing core properties required for the purpose of the article to be formed, such as structurally making it easy to bend or maintain the highest possible strength, etc. on different areas of the sheet (21).

Please continue to refer to FIG. 2 , the combination method (10) of the foam and the reinforced core, in implementation, includes the following steps:

First, the reinforcing core (20) is placed in a mould chamber (31) defined by a mould (30);

As shown in Fig. 2(A)(B)(C), the mold (30) has an upper mold piece (32) and a lower mold piece (33) which can be overlapped or separated from each other. 32) When the lower die (33) is overlapped with each other and located at a clamping position, a closed space is defined between the bonding interface of the upper die (32) and the lower die (33). The mold chamber (31), and when the upper mold (32) and the lower mold (33) are located at a mold opening position separated from each other, the closed state of the mold chamber (31) is lost, and The upper die (32) and the lower die (33) are respectively arranged on the die cavity (321) (331) for defining the die chamber (31) in an open state; the reinforcing core (20) is fastened on the The mold (30) is placed in the mold cavity (331) of the lower mold (33) at the mold opening position, and then the upper mold (32) is stacked on the lower mold (33), so that the reinforcing core (20) is accommodated in the mold chamber (31);

Wherein, as far as the mold chamber (31) is in the mold clamping state, one side (211), the other side (212) and the peripheral side edge (213) of the sheet (21) are all aligned with the opposite side. The mold chamber (31) is separated from the chamber wall (311) without abutting against it, so as to maintain the separation between the reinforcing core (20) and the peripheral side chamber wall (311) of the mold chamber (31) In the current state, an appropriate support structure can be provided between the reinforcement core (20) and the chamber wall of the mold chamber (31) in the direction of gravity, and the reinforcement core (20) can be supported on top. In a feasible example Among them, three protruding points (34) of pins, pillars or protrusions arranged in a triangle and whose height is less than the depth of the cavity at the location can protrude from the bottom surface of the cavity (331) of the lower die (33), The upper free ends of the protruding points (34) support the sheet body (21) of the reinforcing core (20), so as to maintain the reinforcing core (20) and the bottom surface of the cavity (331) of the lower die (33) The protruding points (34) as supporting elements can be fixed on the lower die (33) fixedly or movably on the lower die (33) In another feasible example, a pre-shaped, non-foamed or non-foamed embryo body (not shown in the figure) can be placed on the lower die as a supporting element On the bottom surface of the cavity (331) of the mold (33), the reinforcing core (20) is directly placed on the embryo, so that the reinforcing core (20) and the lower die (33) can also be connected The effect of separating the bottom surface of the mold cavity (331).

Then, the molten polymer raw material (40) containing a foaming agent such as a supercritical fluid is injected into the mold chamber (31) through a suitable runner, so that the polymer raw material (40) is at least full of A part of the mold chamber space between one side surface (211) of the sheet body (21) and the top side chamber wall (311) of the mold chamber (31) in the mold chamber (31), and the through holes (22) In the pore space of the reinforced core (20), when the supporting technology used for the reinforcing core (20) is the above-mentioned protruding points (34), the rated polymer raw material (40) is based on the mold chamber (31) The entire space is the filling object, as shown in Figure 2(D); but when the supporting technology used is the above-mentioned embryo, the rated polymer raw material (40) is only filled in the above-mentioned part of the mold In the chamber space and the hole space of the perforations (22).

After the injection procedure of injecting the polymer raw material (40) into the mold chamber (31) is completed, foaming can be performed in the mold chamber (31) and molded into a foam by the mold chamber (31). (50), and open the mold as shown in Figure 2(E) to take out the finished product. At this time, the completed foam can completely cover the whole of the reinforcing core (20), and is located in the perforations (22) The polymer raw material in the reinforced core (20) is used as a connecting structure to connect the parts of the foam located outside the two sides of the reinforcing core (20) after foam molding, so that the reinforcing core (20) and the foam are connected. A tight binding effect is obtained between the materials (50), and the stability of the binding between the two is ensured, and in another example where only part of the injection is performed, the embryo body should contain the polymer raw material (40) that can be combined with the polymer material (40). The bonding components or the two have the same matrix, whereby the polymer raw material (40) is located in the perforations (22), and the raw material located on the peripheral side of the reinforcing core (20) can be in the same When the embryos are in contact, a bond is formed between the two to obtain the same effect as described above.

What is added is that during the injection procedure of injecting the polymer raw material (40) into the mold chamber (31), the mold chamber (31) can be filled with an appropriate inert gas or carbon dioxide gas before injection. 31), in order to form a back pressure, after the rated injection volume is completed, the filled back pressure gas is drained and discharged instantaneously, so that the polymer raw material (40) completes foaming while the back pressure disappears.

Please continue to refer to FIG. 3 and FIG. 4 by the above-mentioned method for the combined product (11) of the foam and the reinforcing core, which is structurally based on the foam (50) and the reinforcing core (20). The whole is completely covered, and at the same time, the parts formed in each of the through holes (22) are used as bridging elements to connect the foamed parts located outside the two sides of the reinforcing core (20), so that the foam is connected to the reinforcement. The core-bonded article (11) has the elasticity of the foam (50) and the rigidity of the reinforced core (20), and when it is used as a sole, it can greatly improve the user's wearing comfort and when stepping on it. stability.

(10): Combination method of foam and reinforced core

(11): Combination of foam and reinforced core

(20): Reinforced core

(21): sheet body

(211): One-sided

(212): One-sided on the other side

(213): Peripheral side edge

(22): perforation

(30):Mold

(31): Mold room

(311): top side chamber wall

(32): Upper die

(33): Lower die

(321)(331): Mould cavity

(40): Polymer raw materials

(50): foam

FIG. 1 is a perspective view of a reinforcing core in a preferred embodiment of the present invention. FIG. 2 is a manufacturing flow chart of a preferred embodiment of the present invention. FIG. 3 is a perspective view of a combined article according to a preferred embodiment of the present invention. FIG. 4 is a cross-sectional view of a preferred embodiment of the present invention along the secant line 4-4 in FIG. 3 and a partial enlarged view thereof.

(21): sheet body

(22): perforation

(50): foam

Claims (10)

A combined article of foam and reinforcing core, comprising: a reinforcing core, which has a thin sheet body, and a plurality of perforations are respectively arranged on the sheet body; a foam is integrally wrapped around the sheet body. The peripheral side of the sheet body; wherein, the parts of the foam formed in the perforations are used as the connection structure between the two parts of the foam on both sides of the sheet, so as to strengthen the foam and the Strengthen the bonding strength between the cores. The combined article of the foam and the reinforcing core according to claim 1, wherein the combined article is a shoe sole. As claimed in claim 1 or 2, the combined article of foam and reinforced core is made by the following steps: taking the reinforced core; taking a mold, the mold has at least two mold pieces, the The mold pieces can be relatively moved between a mold closing position and a mold opening position under the action of external force, and when the mold pieces are in the mold closing position, a closed space is defined between the mold pieces. The mold chamber; the reinforcing core is located in the space of the mold chamber, and the one side face and the other side face of the reinforcing core facing each other are separated from the opposite side walls of the mold chamber respectively; The rated molten polymer raw material containing a blowing agent is filled at least in a part of the space of the mold chamber and the hole spaces of the perforations, and is foamed in the mold chamber and molded into the foam , wherein, a part of the space of the mold chamber refers to the space between one side of the reinforcing core and the opposite side wall of the mold chamber. The combined article of the foam and the reinforced core according to claim 3, wherein the rated polymer raw material is filled with all the space of the mold chamber except the space where the reinforced core is located. As claimed in claim 3, the combined article of foam and reinforcing core, before the polymer raw material enters the mold chamber, a green body is further interposed between the other side of the reinforcing core and the mold opposite to it. between the chamber walls. The combined article of the foam and the reinforced core according to claim 5, wherein the polymer raw material and the embryonic system respectively comprise the same matrix. The combined article of the foam and the reinforcing core according to claim 5, wherein the embryo system does not contain a foaming agent and is not foamed. The combined article of the foam and the reinforced core according to claim 3, wherein the foaming agent contained in the polymer raw material is a supercritical fluid. The combined article of the foam and the reinforcing core as claimed in claim 3, wherein the peripheral sheet end of the reinforcing core is separated from the peripheral side wall of the mold chamber. The combined article of the foam and the reinforced core according to claim 3, wherein the reinforced core is made of thermoplastic polymer material, thermosetting polymer material, elastic polymer material or composite material.

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