KR100725653B1 - Cap for sealing up infusion in the pack - Google Patents

Abstract

A cap for sealing up an infusion pack is provided to make the assembling of a body and a rubber stopper firm and to make a part of the body hollow to reduce error rate when producing products. A rubber stopper(120) is installed on an upper center of a body(110) of a cap for sealing up an infusion pack. An upper cap(130) covers a part of an upper circumference of a body and the rubber stopper(120). The cap for sealing an infusion pack is connected to the infusion pack by using a tube. The rubber stopper (120) is inserted into an inner side of a separation prevention portion(111) formed on an upper circumference of the body(110). A space portion between a placement portion(113) and the separation prevention portion(111) is formed to be hollow. The outer circumference of an insertion portion(115) is formed to have a shape of a chamfer.

Description

Cap for sealing up infusion in the pack}

1 is an exploded perspective view of a sealing cap for an infusion pack according to the prior art,

Figure 2 is an assembled cross-sectional view of the sealing cap for the sap pack according to the prior art,

3 is a cross-sectional view showing the structure and shape of an integrated tip for an infusion pack according to another prior art,

Figure 4 is a cross-sectional view showing the resin injection hole position of the multi-point gate method according to another prior art,

5 is an exploded perspective view of the sealing cap for the sap pack according to the present invention,

Figure 6 is a cross-sectional view showing the assembly of the infusion pack and sealing cap in accordance with the present invention,

Figure 7 is an enlarged cross-sectional view showing the insertion portion of the lower body according to the invention,

* Description of Major Symbols in Drawings *

100: sealing cap 110: body

111: departure prevention part 112: space part

113: seating portion 115: insertion portion

120: rubber front 122: fitting jaw

124: mounting groove 130: upper cap

131: temper seal adhesive 132: temper seal

140: tube 150: infusion pack

The present invention relates to a sealing cap for an infusion pack, and more particularly, to slim the body to improve product productivity, to facilitate the connection between the body and the tube, and to reduce the raw materials required to produce the product cost of the product It relates to a sealing cap for the sap pack to be reduced.

In general, the sap pack refers to a plastic pack stored in a saline solution, nutrients, glucose and other sap and kept blocked from the outside, mainly used in bottles, clinics.

The lower part of the infusion pack is equipped with a sealing cap, and by inserting a needle or the like before the rubber is mounted in the center of the sealing cap, the contents of the infusion pack can be administered to the human body.

That is, in order to maintain the sealed state of the contents of the sap pack and to administer to the human body, a sealing cap for inserting a needle or the like is necessary.

1 and 2 show an example of a conventional sealing cap (National Registered Utility Model Publication No. 20-0308933 (name: sealing cap for infusion pack)) used in the above-mentioned infusion pack, Consists of the 210 and the sealing member 220 and the cover member 230.

In more detail, the main body 210 is inserted into and connected to the inlet of the infusion pack, and a seal made of rubber in the main body 210 to prevent leakage of external air into the infusion pack or leakage from the infusion pack. The member 220 is inserted. In addition, the cover member 230 is surrounded by injection molding at one end of the main body 210 so that the sealing member 220 does not leave the main body 210.

That is, the sealing member 220 is inserted into the center of the main body 210, and the cover member 230 is formed to cover the sealing member 220 and a part of the main body 210, thereby forming the main body 210 of the infusion pack. It can be mounted in a sealed state in the inlet.

However, the conventional sealing caps including the sealing cap for the conventional sap pack is connected to the lower end of the body using a soft tube when fitted in the sap pack, the sealing cap for the conventional sap pack is very close to the bottom of the body By molding into a small round shape, the lower end of the body is caught around the tube. Therefore, there is a closed end that causes breakage and deformation of the tube and mass production of a large number of defective products.

Moreover, the sealing cap for the conventional sap pack is formed in a very thick middle portion of the body, it is difficult to mass-produce the product due to excessive cooling time after the main body injection molding, as well as causing excessive shrinkage during cooling of the body There was also a closed end difficult to control the dimension, and because of the thick shape of the main body as described above, the material cost was excessive, which caused the unit cost of the product, which caused a problem of deterioration of profitability of the company.

In addition, the conventional sealing caps including the sealing cap for the conventional sap pack was manufactured using a polycarbonate (PC), the polycarbonate has the advantage of being transparent and hard, but injection conditions during injection The problem was that the incidence of product defects was high due to the difficulty and poor flow of resin.

In particular, the polycarbonate is an expensive material of about 4300 won / kg, there is a problem that the raw material cost is excessive, and there is a risk of generating harmful components in contact with the chemical liquid due to the characteristics of the raw material is suitable for use as a raw material of the sealing cap There was also a dismissal.

In addition, since the polycarbonate is hard as described above, the resin properties and the melting temperature are very high. Therefore, the structure of the mold for injecting the main body to be manufactured very firmly, there was a problem that excessive mold development costs are required, nevertheless there is a disadvantage that the mold life is very short.

Moreover, medical rubber material is used as the sealing member used in the sealing cap for the sap pack of the prior art, although the ratio of the rubber raw material cost occupies more than 40% of the unit price due to the characteristics of the rubber material, There was also a problem of lowering the price competitiveness by increasing the unit price of the product by manufacturing the diameter unnecessarily wide.

On the other hand, Figure 3 and Figure 4 shows an example of another conventional sealing cap (domestic registration utility model publication No. 20-0359666 (name: infusion sealing tip for infusion pack for infusion pack)), it will be described in more detail On the other hand, the integrated tip has a structure having a separation preventing boss 11, a pressing boss 12, and a peeling preventing boss 13 on the lower body 10, and an inner protrusion 21 on the sealing rubber radio 20. ) And a through hole 22.

Then, the lower body 10 and the sealing rubber radio 20 are seated on the lower mold 62 so that the material of the hot runner block 34 installed on the upper mold 61 is inserted through the multi-point gate 33. By injection into an injection molding machine is a structure for injection molding the upper end cap 30 having an annular projection 32 on the upper surface of the lower body (10).

That is, by injecting the material of the hot runner block 34 into the mold through the multi-point gate 33 by using the insert-type multi-point injection molding machine, the upper end cap 30 is injection-molded, thereby manufacturing an integrated tip. It can be.

However, the conventional one-piece tip for other infusion packs also had a drawback in which the above-mentioned conventional problems are derived as they are, and in addition to this, there were disadvantages that further caused other problems.

That is, the other conventional one-piece tip for the sap pack is characterized in that the sealing rubber radio is protruded to the upper end of the lower body, there is a problem that the assembly of the lower body and the sealing rubber is unstable, in particular due to this problem the top cap Due to the vibration of the lower body during the movement of the lower body for the injection of the occurrence of the phenomenon that the detached or flipped from the lower body frequently occurs a closed end to produce a lot of defective products.

In addition, since the integrated tip assembled through the above method is unstable in the assembly of the sealing rubber, the risk of leakage of the chemical liquid filled in the sap pack is increased, and the reliability of the product and the company's reputation rapidly decrease. there was.

Furthermore, as described above, since the sealing rubber is exposed to the outside and is formed by injecting the upper cap to the upper circumference of the sealing rubber, the upper cap is exposed to the rubber material during the injection process. There was a problem that it is difficult to maintain the top cap shape, as well as difficult to maintain the horizontal level of the projection. Therefore, it is difficult to maintain the airtightness of the cover attached on the annular protrusion, and there was also a closed end in which foreign matter flows into the sealing rubber top surface.

The present invention has been made to solve the conventional problems as described above, while forming a hollow portion of the body having an excessive thickness while solidifying the assembly of the body and the rubber field to reduce the defective rate at the time of production of the product at the same time It is to provide a sealing cap for the sap pack to save.

Another object of the present invention is to provide a sealing cap for an infusion pack to form a small body end connected to the tube in the form of a chamfer so that the body and the tube can be connected to each other smoothly.

Still another object of the present invention is to provide a sealing cap for a sap pack to reduce the unit cost of the product by molding the diameter and size of the rubber field as small as possible, thereby ensuring the price competitiveness of the product.

The configuration of the present invention for achieving the above object, provided with a rubber seat in the center of the body top, and having a top cap while covering a portion of the body top and the rubber field, using a tube at the bottom of the body In the sealing cap for the sap pack to connect with the sap pack, the rubber field is inserted into the release prevention portion protruding around the upper end of the body, but the space between the seating portion and the release prevention portion in the center of the rubber seat seated hollow The composition is formed in a state, and the outer periphery of the insertion portion of the lower end of the body is characterized in that it is molded in a chamfered form by an angle of 55 ~ 65 °.

Here, the body is characterized in that the production of polypropylene (PP) material, and the rubber field is characterized in that the diameter of 15 ~ 16mm to use.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

5 to 7 show the sealing cap 100 for the sap pack of the present invention, it is largely composed of a body 110, rubber jeon 120 and the upper cap 130.

In the following description, first, the body 110 has a hollow inside, and protrudes from the upper part of the body 110 to the departure preventing part 111 toward the upper part, and is peeled off to a part of the outer peripheral part of the departure preventing part 111. Protrusion shaping 14 is configured to prevent the separation of the upper cap 130 to be described later.

And, around the center of the body 110 located in the separation prevention portion 111 is formed so as to protrude the seating portion 113 toward the top so that the rubber field 120 can be seated thereon, the seating portion ( The inner circumference of the upper end of the 113) is formed in a step shape so that the rubber sheet 120 can be more firmly seated.

At this time, the space around the portion of the body 110 between the seating portion 113 and the departure preventing portion 111 by molding the space 112 in the longitudinal direction to reduce the thickness of the body 110, the body 110 It is configured to prevent deformation due to shrinkage during injection molding.

In addition, the lower portion of the body 110 is integrally molded with the insert 115 so that the end of the tube 140 connected to the infusion pack 150 can be fitted, and the insert 115 is assembled with the tube 140. The thinner than the upper portion of the body 110 is molded in the characteristics. In this case, as shown in FIG. 7, the lower portion of the lower portion of the insertion portion 115 is formed in a chamfered shape by 55 ° to 65 ° angle θ, so that the lower portion of the lower portion of the insertion portion 115 is assembled when the tube 140 and the body 110 are assembled. The part is configured not to be caught by the tube 140.

Here, the body 110 is made of a material of transparent polypropylene (PP) approved by the KFDA standard, the polypropylene used in the present invention does not generate harmful substances when contacted with the sap, the resin properties It is soft and has a low melting temperature.

Next, the rubber field 120 serves to prevent leakage of the sap pack 150 to the outside, and is firmly fitted to the top center of the body 110.

5 and 6, the rubber sheet 120 is completely inserted into the separation preventing portion 111 formed on the top of the body 110, and the outer surface of the rubber sheet 120 is separated. It is in intimate contact with the inner peripheral surface of the prevention part 111. At this time, the diameter (L) of the rubber field 120 is formed to have a length of 15 ~ 16mm, it is configured to reduce the raw material required to produce the rubber field 120.

In addition, the mounting groove 124 is formed along the upper circumference of the rubber field 120 so that the upper inner circumferential portion of the upper cap 130 to be described later is provided in close contact with the mounting groove 124.

In addition, the center of the rubber field 120 is formed by the mounting groove 124 is formed as described above, the upper surface of the center portion is protruded, the rubber field 120 through the shape of the rubber field 120 protruded as described above ) And the height of the space formed between the temper chamber 132 to be described later can be reduced. Therefore, after removing the temper chamber 132 in order to use the sealing cap, it is possible to smoothly perform the top surface disinfection work.

In addition, a fitting jaw 122 is formed around the bottom of the rubber field 120, and the fitting jaw 122 is fitted into the space 112 formed between the separation preventing part 111 and the seating part 113. You lose. In this case, the fitting jaw 122 is partially inserted into the upper portion of the space 112 instead of being deeply inserted into the space 112, thereby again raw materials required to produce the rubber field 120. It is configured to reduce.

In addition, the lower center portion of the rubber field 120 is fitted inside the seating portion 113, so that the rubber field 120 and the body 110 can be firmly assembled to each other. In addition, the upper and lower through parts 121 and 123 are respectively formed by concave forming the upper through part 121 at the center of the upper surface of the rubber sheet 120 and the lower through part 123 at the center of the lower surface of the rubber sheet 120. It is configured so that the needle can be inserted through).

Subsequently, the upper cap 130 is to cover the upper circumference of the body 110 and a portion of the upper surface of the rubber sheet 120 to prevent the outer detachment of the rubber sheet 120, the upper portion of the body 110 Is installed.

This, the upper cap 130 is molded by injection molding, the lower circumference of the inner center of the upper cap 130 is covered along the upper circumference of the rubber field 120, to prevent the separation of the rubber field 120 Done. In addition, the outer side of the upper cap 130 covers the upper outer portion of the body 110 including the peeling prevention jaw 114, thereby firmly assembling the upper cap 130 and the body 110 to each other.

In this case, a temper seal adhesive portion 131 is formed to protrude flatly around the upper surface of the upper cap 130, and a temper seal 132 is attached to the upper surface of the temper seal adhesive portion 131 while maintaining airtightness. 132 and the rubber field 120 is configured to prevent dust and foreign matter from entering the space between the upper surface.

Referring to the operation and effect of the present invention configured as described in detail as follows.

In order to manufacture the sealing cap 100 for the sap pack of the present invention, the body 110 is first injection molded, and the body 110 is molded and manufactured by using a separate mold suitable for the body 110 to be injected. .

At this time, the body 110 is injected as described above should be subjected to the cooling action, the body 110 used in the present invention by forming a space 112 between the separation prevention portion 111 and the seating portion 113 By making the thickness of the upper portion of the body 110 slim, it is possible to improve the productivity of the product by reducing the cooling time by more than 30% than the conventional body 110 cooling time.

In addition, by forming the space portion 112 as described above, it is possible to minimize the shrinkage action of the body 110 generated during cooling, it is possible to control the dimensions of the body 110 more accurately, and also to the space portion 112 Material cost can be reduced by reducing the amount of material input by the volume of).

In particular, since the raw material for manufacturing the body 110 of the present invention uses a polypropylene which is about 70% cheaper than the polycarbonate used in the related art, it is possible to significantly reduce the cost of the product by reducing the material cost .

In addition, due to the characteristics of polypropylene, the resin properties are soft and injection molding is possible through a low melting temperature, thereby simplifying the structure of the mold for injection, thereby reducing the mold manufacturing cost and increasing the life of the mold. Due to its properties, no harmful components are generated when it comes in contact with the sap.

As such, after the body 110 is manufactured, the rubber sheet 120 is completely inserted into the release preventing portion 111 formed on the top of the body 110. That is, the rubber field 120 is completely inserted into the top of the body 110, so that the assembly of the body 110 and the rubber field 120 can be made stable, thereby forming the upper cap 130 When the body 110 is moved, the rubber sheet 120 may be prevented from being deviated or turned over by vibration. Therefore, it is possible to minimize the defective rate of the product production, it is possible to prevent the outflow of the sap through the stable rubber field 120 assembly.

Here, the rubber field 120 is used for medical purposes, the price fluctuation is very severe and the ratio of the product cost is made of expensive material to occupy 40%. Therefore, in the present invention, the diameter L of the rubber field 120 is 20 mm in length, and the conventional one is greatly reduced to 15 to 16 mm to manufacture and assemble, thereby significantly reducing the unit cost of the product. To increase the price competitiveness of the product.

On the other hand, after assembling the body 110 and the rubber pan 120 as described above, by moving the body 110 to form an upper cap 130 on the upper body 110 by injection molding. At this time, the rubber field 120 is inserted into the body 110 as described above completely inserted, the contact area of the upper cap 130 and the rubber field 120 is extremely limited.

Therefore, by minimizing the contraction action of the upper cap 130 in contact with the rubber field 120, it is possible to manufacture while maintaining the temper seal adhesive portion 131 formed on the upper cap 130 flat, the temper seal adhesive portion The temper chamber 132 can be bonded to the airtight state 131.

As such, when the manufacturing of the sealing cap 100 is completed by forming the upper cap 130 on the body 110 on which the rubber sheet 120 is mounted, the sealing cap 100 is an infusion pack using the tube 140. Connect with 150. That is, both ends of the tube 140 are fixed to the inserting portion 115 and the sap pack 150 in the lower portion of the body 110 in a sealed state.

At this time, the end of the insert 115 is chamfered in the form of a chamfer, it is possible to assemble more smoothly without damaging the inlet of the tube 140 when assembling the insert 115 and the tube 140, Through the same series of processes it is possible to closely connect the sealing cap 100 to the infusion pack 150.

On the other hand, in order to administer the sap inside the sap pack 150 to the human body using the sap pack 150 as described above, after removing the temper seal 132 attached to the sealing cap 100, the rubber field 120 ) Sterilize the upper surface cleanly. At this time, the upper portion of the rubber field 120 is formed by protruding, so that the length between the temper room adhesive portion 131 to which the temper chamber 132 is attached and the upper surface of the rubber field 120 does not become deep, thereby Disinfection can be done more cleanly and smoothly.

On the other hand, the present invention has been described in detail only with respect to the specific examples described above it is obvious to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, it is obvious that such variations and modifications belong to the appended claims. will be.

As described above, the present invention, by forming a space between the separation prevention portion and the seating portion, to greatly reduce the cooling time of the injected body to improve the productivity of the product, to minimize the body shrinkage action generated during cooling of the product It is possible to precisely control the dimensions and to reduce the material cost by reducing the material required to create the body.

In addition, by using polypropylene having a low raw material cost as a raw material for body manufacture, it is possible to drastically reduce the unit cost of the product, and because of the characteristics of the polypropylene, the resin property is soft and injection molding is possible through a low melting temperature. Simplification of mold manufacturing cost can be reduced and mold life can be extended, and harmful components can be prevented from coming into contact with sap.

In addition, by completely inserting the rubber transition inside the body, it is possible to reliably assemble the body and the rubber transition to prevent the phenomenon that the rubber transition is separated or flipped, thereby minimizing the defective rate of product production, sap It also has the effect of preventing leakage to the outside. In addition, by significantly reducing the diameter of the rubber field to 15 ~ 16mm manufactured and assembled, there is also an effect that can significantly reduce the unit cost of the product and increase the price competitiveness of the product.

In particular, by molding the end of the insertion portion of the lower end of the body in the form of a chamfer, it is possible to assemble smoothly without damaging the inlet of the tube when assembling the insertion portion and the tube, thereby connecting the fluid pack and the sealing cap can be closely connected to each other. There is also an effect.

Furthermore, since the upper end portion of the rubber field is protruded and provided, the length between the tempered seal adhesive portion with the tempered seal and the upper surface of the rubber field is not deepened, and thus, the disinfection of the upper surface of the rubber field to be performed before infusion solution is performed. There is also an effect that can be performed cleanly and smoothly.

Claims (4)

In the center of the upper end of the body having a rubber seat seating, while covering the rubber circumference and the upper portion of the body cap having an upper cap, in the sealing cap for the sap pack for connecting to the sap pack using a tube at the bottom of the body, The rubber sheet 120 is provided to be inserted into the release preventing portion 111 protruding around the upper end of the body 110, but the rubber sheet 120 has a seating portion 113 in the center of the body 110 on which the rubber sheet 120 is seated and the separation prevention. The space portion 112 is formed around the portion 111 in a hollow state, Sealing cap for the sap pack, characterized in that the outer periphery of the insert portion 115 of the bottom of the body 110 is molded in a chamfered form by an angle θ of 55 ~ 65 °. The sealing cap for the sap pack of claim 1, wherein the body (110) is made of polypropylene (PP) material. The sealing cap for the sap pack of claim 1, wherein the rubber field (120) uses a diameter (L) of 15 to 16 mm. The sealing cap for the sap pack of claim 1, wherein the rubber field 120 is formed by stepping the mounting groove 124 along the upper circumference to protrude the center portion.

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