TWI655941B - Splint and manufacturing method therefor - Google Patents

Abstract

The present invention relates to a method for producing a secondary wood comprising: A. melting a low temperature thermoplastic material into a liquid state and then injecting it into a mold; B. placing a solid biodegradable material in the mold into the mold, One of the biodegradable materials is partially bonded to the low temperature thermoplastic material; C. the low temperature thermoplastic material is tightly bonded to the biodegradable material by contact bonding, and the low temperature thermoplastic material is completely covered by the The local extent of the biodegradable material; D. cooling the low temperature thermoplastic material to solidify and combine the biodegradable material into a solid wood, and then removing the secondary wood from the mold. And the secondary wood produced by the above production method. In order to speed up production, easy demoulding and use.

Description

Secondary wood and its making method

The invention relates to a manufacturing method of a secondary wood which can speed up the process, rapid demolding and convenient use, and a finished product made of the same.

At present, when a general person suffers a physical injury, it is usually necessary to wear a secondary wood at the injured place, thereby protecting or supporting the joint and the soft tissue to help heal and reduce the occurrence of inflammation. It further provides good placement, prevents or corrects deformation, and assists or replaces the function of damaged muscles to perform activities. Splint, also known as wood protection, is a low-temperature thermoplastic material that is processed in hot water at 60 to 70 degrees Celsius. The functional therapist is made into different shapes according to the patient's needs, and is directly shaped on the injured limb. The advantages are light weight, easy to put on and take off, and good support and protection.

A common sub-wood structure, for example, the novel No. M427147 "Deputy Wood" patent published on April 21, 101, which discloses a thermoplastic body and at least one thermochromic pattern layer. The thermoplastic body has a softening operating temperature. The thermochromic pattern layer is on the thermoplastic body. The thermochromic pattern layer comprises at least one thermochromic region. The thermochromic zone has a thermochromic temperature. The thermochromic temperature is below the softening operating temperature but above room temperature. The softening operation temperature is about 40 to 70 ° C, and the thermochromic temperature is about 25 to 60 ° C. The softening method is used to soften the secondary wood, and the color or pattern displayed on the secondary wood changes with temperature to appease the emotion of the child patient, so that the treatment can be smoothly performed.

The secondary wood produced in the prior patent has poor gas permeability, is prone to acne when worn for a long time, and is quite troublesome and time consuming to manufacture.

There is also a patent of the invention No. I440556, "The Thermoplastic Memory Type Three-dimensional Mesh Sheet and Its Application", which was published on June 11, 103, which discloses a three-dimensional gas permeable sheet and a thermoplastic coating material. The three-dimensional gas permeable sheet is a flexible and sheet-shaped three-dimensional gas permeable sheet, and the thermoplastic coating material is attached to a part or the whole surface of the three-dimensional gas permeable sheet, and the thermoplastic coating material has a moldable temperature lower than the The three-dimensional breathable sheet; thereby providing the thermoplastic memory type three-dimensional mesh sheet with good gas permeability, light weight, rigidity and support performance, and is very suitable for use in auxiliary wood, plaster bandage, safety protector, etc. .

However, most of the internal and external bonding methods of the patent are manufactured by means of immersion plating, coating, etc., which need to be completed by human power, and cannot be highly automated, which also increases the waste of many working hours and manpower. This method can only be applied to a thermoplastic material in a three-dimensional grid, and cannot be used in a planar form.

Accordingly, in view of the current secondary wood structure and its manufacturing method, the above disadvantages are obtained. Therefore, the present invention provides a method for producing a secondary wood comprising: A. melting a low temperature thermoplastic material into a liquid state, and then injecting it into a mold of a molding machine; B. placing a solid biodegradable material in the solid state into the mold. In the mold, one of the biodegradable materials is partially bonded to the low temperature thermoplastic material; C. the low temperature thermoplastic material is tightly bonded to the biodegradable material by contact bonding, and the low temperature thermoplastic material is Completely covering the local range of the biodegradable material; D. cooling the low temperature thermoplastic material to be solidified with the biodegradable material into a solid wood, and then the secondary wood is removed from the mold take out.

The invention further comprises the step E. incorporating an attachment layer on one of the inner surfaces of the secondary wood, the attachment layer being a gauze or a dressing.

The invention further applies a layer of Teflon on the inner surface of the mold, so that the auxiliary wood can be quickly released from the mold.

The above step A. is to previously melt the low temperature thermoplastic material to a liquid state at a temperature between 100 ° C and 250 ° C.

The low temperature thermoplastic material is any one or a combination of polycaprolactone polyol, polylactic acid, polybutylene succinate, polybutylene adipate/butylene terephthalate, and the biodegradable material. It is any one or a combination of polylactic acid, polycaprolactone polyol, plant fiber.

The above biodegradable material accounts for 50% to 80% by volume, and the low temperature thermoplastic material accounts for 20% to 50% by volume.

In the above step C., the biodegradable material is tightly bonded to the low temperature thermoplastic material by applying the mold to the mold by any one of in-mold press bonding, in-mold bonding or shot coating.

The present invention may also be a sub-wood made by the above-mentioned method of making a secondary wood, comprising: a fixed layer formed by the warm thermoplastic material, the fixed layer being formed with a plurality of vent holes, and Forming at least one fixing member and at least one fixing hole on the periphery of the fixing layer, the fixing member correspondingly extending into the fixing hole, the fixing layer having an outer surface and a first bonding surface; and a buffer layer a biodegradable material, the buffer layer is provided with an inner surface and a second bonding surface, the second bonding surface is opposite to the first bonding surface; a bonding layer is immersed in the low temperature thermoplastic material The local extent of the biodegradable material is formed, the bonding layer being bonded between the second bonding surface and the first bonding surface.

The invention further comprises an attachment layer bonded to the inner surface, the attachment layer being comprised of a gauze or a dressing.

The fixing member is provided in a strip shape like a strap or a fastener.

The above technical features have the following advantages:

1. The molding machine and process method used in manufacturing can be highly automated and speed up production to save manpower, time and money.

2. The manufactured secondary wood is easy to demould, which can make the finished product not damaged after being manufactured, and can reduce the subsequent repairing process.

3. By discoloration display of the color changing layer, it can be immediately known that the fixed layer has begun to soften, and can be used for the injury, thereby avoiding the time to wait for softening and trying to pull the fixed layer to soften.

4. After wearing the auxiliary wood to fix the injured area, the vent hole on the fixed layer and the buffer layer have a mesh structure, so that the effect of rapid gas exchange can be achieved, so that the covered wound does not cause acne. And comfortable.

5. The buffer layer is made of biodegradable material, which can have anti-allergic effect to protect the injured part of the user from secondary injury due to allergies.

6. The adhesive layer can be composed of gauze or dressing, so it has the characteristics of hemostasis, antibacterial, antibacterial, non-sticking, etc., to help the recovery of the injury.

7. The above-mentioned fixing member can be used for single-person operation and vice-wood molding, and in the case of emergency rescue, such as accidental or narrow fracture fixation.

(1) ‧ ‧ fixed layer

(11)‧‧‧ venting holes

(12)‧‧‧Fixed parts

(13) ‧‧‧Fixed holes

(14) ‧ ‧ outer surface

(15) ‧‧‧ first joint

(2) ‧‧‧buffer layer

(21) ‧‧‧ inner surface

(22) ‧‧‧second joint

(3) ‧‧‧ bonding layer

(4) ‧ ‧ color changing layer

(5)‧‧‧ Attachment layer

(A)‧‧‧Mold

(B) ‧‧‧Foot

[First figure] is a flow chart of a method for producing a secondary wood according to the present invention.

[Second image] is a cross-sectional view showing the manufacturing method of the sub-wood of the present invention by a mold.

[Third image] is a schematic view of a method for making a secondary wood in the present invention by using a mold to form a secondary wood.

[Fourth figure] is a sectional view of the combination of the secondary wood of the present invention.

[Fifth figure] is a schematic view showing the use of the auxiliary wood of the present invention fixed to the injured part of the ankle.

Referring to the first, second and third figures, an embodiment of the present invention is a method for manufacturing a secondary wood, comprising the following steps, wherein:

A. A low temperature thermoplastic material is melted into a liquid state and injected into a mold of a molding machine. The low temperature thermoplastic material is polycaprolactone polyol [PCL], polylactic acid [PLA], polybutylene succinate [PBS], polyadipate/butylene terephthalate (PBAT). Any or a combination thereof. The molding machine is a hot press or a jetting machine. In this embodiment, the mold (A) of the hot press is used. The inside of the mold (A) is in a honeycomb shape, so that it can be formed into a honeycomb structure. . Preheating the low temperature thermoplastic material to a liquid state at a temperature between 100 ° C and 250 ° C in advance, and then injecting the liquid low temperature thermoplastic material into the mold (A) to form a low temperature thermoplastic material into a mold Fixed layer (1). Further, by the design of the honeycomb structure of the mold (A), the fixed layer (1) is formed with a plurality of vent holes (11), and at least one fixing member is formed on the periphery of the fixed layer (1). And at least one fixing hole (13).

B. placing one of the solid biodegradable materials in the mold into the mold such that one of the biodegradable materials is partially bonded to the low temperature thermoplastic material. The biodegradable material is made of any one or a combination of polylactic acid (PLA), polycaprolactone polyol (PCL), plant fiber (cotton fiber, hemp fiber, silk fiber, paper fiber, bamboo fiber). It has a mesh structure and has an anti-allergic effect. The volume fraction of the biodegradable material is 50% to 80%; the volume percentage of the low temperature thermoplastic material is 20% to 50%. The biodegradable material in a solid state is placed in the mold (A) so that the biodegradable material can be molded into a buffer layer (2). Again, the localized range of the biodegradable material is immersed in the low temperature thermoplastic material of the liquid.

C. The low temperature thermoplastic material is intimately bonded to the biodegradable material by contact bonding and the low temperature thermoplastic material is completely encapsulated in the localized range of the biodegradable material. Using the molding machine, the buffer layer (2) formed by the biodegradable material is applied to the mold (A) by any one of in-mold press bonding, in-mold bonding, or shot coating. The fixed layer (1) formed by the low temperature thermoplastic material may be tightly bonded, and the localized range of the biodegradable material immersed in the low temperature thermoplastic material is formed into a bonding layer (3). The total thickness of the fixed layer (1), the buffer layer (2) and the bonding layer (3) after bonding is between 1 mm and 3 mm.

D. Cooling the low temperature thermoplastic material to solidify and combine the biodegradable material into a solid wood, and then removing the secondary wood from the mold. Finally, after the mold (A) is cooled by natural cooling or physical cooling, the liquid low temperature thermoplastic material is cooled to room temperature [25 ° C], then the buffer layer (2) and the fixed layer (1) can be made. The sub-wood is solidified by the bonding layer (3).

E. Applying a thermochromic ink to an outer surface of one of the sub-woods, and attaching an adhesive layer to an inner surface of one of the sub-woods. As shown in the fourth figure, the surface of the fixed layer (1) that is not bonded to the buffer layer (2) is configured as the outer surface (14) of the sub-wood, and the buffer layer (2) is not fixed thereto. The surface of the layer (1) is formed as the inner surface (21) of the sub-wood, and the outer surface (14) of the sub-wood is coated with a thermochromic ink, thereby forming a color-changing layer ( 4). A gauze or a dressing is applied to the inner surface (21) of the sub-wood to form the attachment layer (5).

Further, the mold (A) in the above step A may be coated with a layer of Teflon on the inner surface of the mold (A), thereby being used in the above step D for the sub-wood to be made by the mold (A). It can be easily and quickly demolded without destroying the construction of the finished wood. Therefore, the manufacturing method of the embodiment, the molding machine used and the manufacturing method can be highly automated, so as to speed up the production speed of the secondary wood and reduce the subsequent processing operations.

Another embodiment of the present invention is a sub-wood, as shown in the third and fourth figures, which is manufactured by the above-mentioned method of manufacturing a sub-wood comprising a fixed layer (1) and a buffer layer (2). ), a bonding layer (3), a color changing layer (4), and an attachment layer (5), wherein:

The fixed layer (1) is composed of a warm thermoplastic material. The low temperature thermoplastic material is polycaprolactone polyol [PCL], polylactic acid [PLA], polybutylene succinate [PBS], polyadipate/butylene terephthalate (PBAT). Any or a combination thereof. The fixed layer (1) is formed with a plurality of vent holes (11), and at least one fixing member (12) and at least one fixing hole (13) are formed on the periphery of the fixing layer (1), the fixing member (12) The belt is in the shape of a belt, and the fixing member (12) is integrally formed by the fixing layer (1). The fixing member (12) can be correspondingly inserted into the fixing hole (13), and the fixing member (12) is designed to be a strap or a fastener. Further, the fixing layer (1) has an outer surface (14) and a first bonding surface (15).

A buffer layer (2) is combined with the fixed layer. The buffer layer (2) is composed of a biodegradable material and has anti-allergic effects. The biodegradable material is made of any one or a combination of polylactic acid (PLA), polycaprolactone polyol (PCL), plant fiber (cotton fiber, hemp fiber, silk fiber, paper fiber, bamboo fiber). Into a mesh structure. The buffer layer (2) is provided with an inner surface (21) and a second bonding surface (22), and the second bonding surface (22) is opposite to the first bonding surface (15) of the fixing layer (1).

a bonding layer (3) consisting of the local range between the second bonding surface (22) and the first bonding surface (15) to which the buffer layer (2) and the fixing layer (1) are combined . That is, the bonding layer (3) is bonded between the second bonding surface (22) and the first bonding surface (15).

A color changing layer (4) is bonded to the outer surface (14) of the fixed layer (1). The color-changing layer (4) is composed of a thermochromic ink. The temperature change temperature at which the thermochromic ink starts to change color after being heated is 65 ° C or higher.

An attachment layer (5) is bonded to the inner surface (21) of the buffer layer (2). The attachment layer (5) is composed of a gauze or a dressing.

In use, as shown in the third, fourth and fifth figures, the secondary wood produced according to this embodiment can be worn at the position of the ankle (B). The sub-wood system can be placed in a general ambulance, or in an emergency room, or the user can carry it out while climbing out and playing. When the user is injured in his ankle (B), the fixed layer (1) of the secondary wood can be softened by means of an appliance, and the heating temperature is preferably between 65 ° C and 75 ° C. . When the fixing layer (1) is heated to 65 ° C or higher, the color changing layer (4) starts to change color, and the user can know the fixing layer by the discoloration display of the color changing layer (4). (1) The system has begun to soften to avoid time-consuming waiting for softening and attempting to pull the fixed layer (3) to soften. After the discoloration begins, the attachment layer (5) can be directly attached to the use. The injured ankle (B) is on the skin, and at the same time, the fixed layer (1) which has been softened is shaped so that it can be attached to the curve of the ankle (B). The fixing member (12) in the form of a belt is wound around the trailing edge of the ankle (B), and the fixing member (12) is inserted into the fixing hole (13) and fixed. After the fixed layer (1) is cooled to room temperature, it can be hardened and shaped for fixing to the injured part of the ankle (B) to avoid the deterioration of the injury, and can be sent to the hospital for diagnosis and treatment.

The user can form a plurality of vent holes (11) on the fixed layer (1) while the wearer is wearing the fixed portion, and the buffer layer (2) also has a mesh structure, so that the user can quickly achieve The effect of venting the air makes the injured area not sultry and comfortable. At the same time, the buffer layer (2) is composed of a biodegradable material, so it has an anti-allergic effect. Further, the attachment layer (5) can be composed of gauze or a dressing material, so that blood or body fluid flowing out from the wound can be absorbed, which contributes to the recovery of the injury.

In view of the foregoing description of the embodiments, the operation and the use of the present invention and the effects of the present invention are fully understood, but the above described embodiments are merely preferred embodiments of the present invention, and the invention may not be limited thereto. Included within the scope of the present invention are the scope of the present invention.

Claims (10)

A method for making a secondary wood comprising the steps of: A. melting a low temperature thermoplastic material into a liquid state and injecting it into a mold of a molding machine; B. placing a solid biodegradable material in the mold into the mold a part of the biodegradable material is bonded to the low temperature thermoplastic material; C. the low temperature thermoplastic material is tightly bonded to the biodegradable material by contact bonding, and the low temperature thermoplastic material is completely packaged Covering the local extent of the biodegradable material; D. cooling the low temperature thermoplastic material to solidify and combine the biodegradable material into a solid wood, and then removing the secondary wood from the mold. The method for producing a secondary wood according to claim 1, further comprising the step E. attaching an adhesive layer to an inner surface of the auxiliary wood, the adhesive layer being a gauze or a dressing. For example, in the method for producing a secondary wood according to the first aspect of the patent application, a layer of Teflon is further coated on the inner surface of the mold, so that the auxiliary wood can be quickly released from the mold. The method for producing a secondary wood according to claim 1, wherein the step A. is to melt the low temperature thermoplastic material to a liquid state at a temperature between 100 ° C and 250 ° C in advance. The method for producing a secondary wood according to claim 1, wherein the low temperature thermoplastic material is polycaprolactone polyol, polylactic acid, polybutylene succinate, polyadipate/terephthalic acid. Any one or combination of butadiene esters, the biodegradable material being any one or a combination of polylactic acid, polycaprolactone polyol, plant fiber. The method for producing a secondary wood according to claim 1, wherein the biologically decomposable material accounts for 50% to 80% by volume, and the low temperature thermoplastic material accounts for 20% to 50% by volume. The method for manufacturing a secondary wood according to the first aspect of the invention, wherein the step C. is a method in which the molding machine applies any one of the in-mold press, the in-mold bonding or the shot to the mold. The biodegradable material is tightly bonded to the low temperature thermoplastic material. An auxiliary wood prepared by the method of manufacturing a secondary wood according to claim 1 of the patent application, comprising: a fixed layer formed by the warm thermoplastic material, wherein the fixed layer is formed with a plurality of vent holes, Forming at least one fixing member and at least one fixing hole on the periphery of the fixing layer, the fixing member correspondingly extending into the fixing hole, the fixing layer having an outer surface and a first bonding surface; a buffer layer, Constructed as the biodegradable material, the buffer layer is provided with an inner surface and a second bonding surface, the second bonding surface is opposite to the first bonding surface; a bonding layer is immersed in the low temperature thermoplastic The local extent of the biodegradable material in the material is formed, the bonding layer being bonded between the second bonding surface and the first bonding surface. The accessory wood according to Item 8 of the patent application, further comprising an attachment layer bonded to the inner surface, the attachment layer being composed of a gauze or a dressing. The auxiliary wood according to Item 8 of the patent application, wherein the fixing member is provided in a strip shape like a strap or a fastener.