JP6547152B2 - MEDICAL PACKAGE AND METHOD FOR MANUFACTURING MEDICAL PACKAGE - Google Patents

Description

  The present invention relates to a medical package for containing medical products and a method of manufacturing a medical package, and in particular, a medical product is disposed between overlapping surfaces of a first sealing member and a second sealing member. The present invention relates to a medical package in which medical products are packaged in a sealed state by heat-fixing and a method of manufacturing the same.

  Conventionally, medical application products used in the medical field such as contact lenses, IOL inserters, syringes, puncture needles, gauze, tweezers, etc. are individually or multiply provided in the market and used for distribution, storage, etc. Several conventional medical packages have been proposed.

  Such medical packages are often used to package medical products in a sealed state for the purpose of preventing contamination or deterioration of medical products before opening. For example, the medical application is disposed between the overlapping surfaces of the first sealing member and the second sealing member, and the first sealing member and the second sealing member are heated around the medical application. By being fixed, the storage portion for storing the medical application is formed in a sealed state with respect to the external space.

  By the way, in such a medical package, in view of facilitating the sealing and fixing of the first sealing member and the second sealing member and realizing the required characteristics such as the gas barrier property, the first sealing A first sealing member and a second sealing member are made of such a thermoplastic resin layer as a laminate material having a laminated structure of at least one of the stopper member and the second sealing member with a metal foil layer and a thermoplastic resin layer The structure which heat-welded is suitably employ | adopted. For example, those described in JP-A-2015-502296 (Patent Document 1), which is used as an individual package of a soft contact lens which is a kind of medical use product, are such.

  However, in the medical package of the conventional structure, when the first sealing member and the second sealing member are peeled off and opened in the heat welding area when using the medical application product, the welded thermoplastic resin There was a possibility that the layer may delaminate from the metal foil layer. Then, when delamination occurs, the welded thermoplastic resin layer remains in the form of a film to cover the opening of the storage section, making it difficult to open, causing problems in taking out medical products and adversely affecting use. There was a problem to be exerted.

  In addition, in order to suppress the delamination at the time of opening and to improve the opening operability, the temperature and pressure at the time of heating and welding the first sealing member and the second sealing member are set low, or a thermoplastic resin It is also conceivable to select materials. However, it has been difficult to stably obtain sufficient sealing performance, and the sealing condition is easily released unintentionally, which is not an effective countermeasure because deterioration in the reliability of the package can not be avoided.

Japanese Patent Publication No. 2015-502296

  The present invention has been made against the background described above, and the problem to be solved by the present invention is to achieve good unsealing operability by suppressing the delamination at the time of unsealing while stably securing the sealing performance. An object of the present invention is to provide a medical package having a novel structure that can be performed, and to provide a novel manufacturing method of the medical package.

According to a first aspect of the present invention, the first sealing member and the second sealing member are overlapped and fixed by overlapping the first sealing member and the second sealing member. In a medical package having a housing portion for housing a medical application product formed between surfaces, a laminate in which at least one of the first sealing member and the second sealing member has a thermoplastic resin layer on an overlapping surface. The housing portion is sealed by heating and fixing the first sealing member and the second sealing member by the thermoplastic resin layer, which is a composite material of a structure, and around the housing portion. A single curved convex outer peripheral edge curved toward the outer peripheral side in the opening width direction of the housing in the fixing region of the first sealing member and the second sealing member formed in , with the inner peripheral edge portion of the concavo-convex shape having at least two recesses in the opening width direction of the housing part Wherein the opening piece extending in the circumferential direction is provided.

  In the medical package having the structure according to the present aspect, the uneven inner peripheral edge portion is formed at the portion to be opened in the fixing area where the first sealing member and the second sealing member are peeled off at the time of opening. Thereby, when peeling off the portion to be opened, the delamination of the heat-fixed thermoplastic resin layer is suppressed, and the delamination layer is easily divided even if the interlayer is temporarily separated, thereby reliably and easily unsealing. This can be done to improve the feeling of opening the package.

  In addition, since delamination of the thermoplastic resin layer at the time of opening the portion to be opened is suppressed, the temperature and pressure at the time of heat fixation and the like are adjusted without causing great deterioration in workability and operability at the time of opening. It is also possible to improve the adhesion and reliability of the area. In addition, even when variations occur in the setting of the temperature and pressure at the time of heat fixation, the problem due to the delamination of the thermoplastic resin layer at the time of opening is prevented, and the good workability and the feeling of operation at the time of opening are stabilized. It will be possible to As a result, the incidence rate of defective products can be reduced, and the burden of condition management at the time of heat fixation can be reduced.

In the medical package of the present embodiment, it is apparent from the experimental results in the embodiments described later that the above-described effects are exhibited by forming the inner peripheral edge portion of the fixing region in the portion to be opened in a concavo-convex shape. Although there are, the technical reasons can be estimated as follows, as understood from the experimental photographs in the embodiments described later. First, in the inner peripheral edge of the part to be opened of the fixing area, by adopting the concavo-convex shape having a plurality of recesses in the opening width direction of the housing part, the inner peripheral edge of the fixing area of the part to be opened The actual total length can be set long, and as a result, the volume of the thermoplastic resin layer that generates delamination can be dispersed in a wide range and the strength can be reduced. In addition, the region where the thermoplastic resin layer that generates delamination during opening is particularly pulled is set at a plurality of locations by the plurality of concave portions provided in the opening width direction, as described above. It is possible to locally and strongly pull the thermoplastic resin in which the volume is dispersed by lengthening the actual total length, and as a result, the opening operation force is efficiently applied to the thermoplastic resin as the local tensile breaking force. By cutting, it is considered that occurrence and growth of delamination can be suppressed. Further, according to a second aspect of the present invention, the first sealing member and the second sealing member are overlapped and fixed to each other, thereby forming the first sealing member and the second sealing member. In the medical package in which a housing portion for housing a medical application is formed between overlapping surfaces, the first sealing member is made of a hard material and a housing recess formed in the first sealing member is provided. The cover is covered with the second sealing member, and at least one of the first sealing member and the second sealing member is a composite material of a laminated structure having a thermoplastic resin layer on an overlapping surface. The first sealing member and the second sealing member are heat-adhered by the thermoplastic resin layer, whereby the housing portion is sealed and the first portion formed around the housing portion. Opening of the receiving recess formed in the first sealing member in the bonding area of the second sealing member and the second sealing member. The portion is an inner circumferential shape extending in the circumferential direction with an uneven shape having at least two recesses in the opening width direction of the housing portion, thereby providing an open scheduled portion extending in the circumferential direction with the inner peripheral edge portion of the uneven shape It is characterized by

A third aspect of the present invention is the medical package according to the first or second aspect, wherein the concavo-convex shape of the inner peripheral edge portion of the fixing region in the portion to be opened is periodically continued in the circumferential direction. And it has a corrugated or chevron shape.

  In the medical package of the present embodiment, by making the inner peripheral edge of the fixing region in the portion to be opened in a periodically uneven shape, the actual total length of the inner peripheral edge can be set longer and the delamination at the time of opening is made. It becomes possible to disperse | distribute the thermoplastic resin layer which generate | occur | produces substantially equally among the some recessed part provided in the opening width direction, and to make a tensile breaking force act more efficiently. As a result, occurrence and growth of delamination at a specific location are also effectively prevented, and a more stable opened state can be favorably expressed in the entire opening width direction.

A fourth aspect of the present invention is the medical package according to any one of the first to third aspects, wherein the concavo-convex shape of the inner peripheral edge portion of the fixing area in the portion to be opened protrudes to the inner peripheral side The convex portion has a tapered convex shape in which the width dimension gradually decreases toward the inner peripheral side.

  In the medical package of this aspect, the projections formed on the inner peripheral edge portion of the fixing area at the portion to be opened are tapered, so that the delamination occurs at the time of opening in the recesses located between the adjacent projections. The release film of the thermoplastic resin according to is effectively pulled and broken by the convex portions on both sides of which the separation distance increases as the opening progresses, and the growth of the release film can be more effectively prevented. In addition, even when a peeling film of thermoplastic resin is generated by delamination at the tip of the convex portion which is to be peeled off lastly during opening, the convex portion has a tapered shape so that it is easily broken and the growth of the peeling film Is prevented.

  The tapered convex portion in this aspect may have a curved side edge as well as a straight side edge, and the tip end may be rounded in addition to a sharp pointed end.

A fifth aspect of the present invention is the medical package according to any one of the first to fourth aspects, wherein the concavo-convex shape of the inner peripheral edge of the fixing area in the part to be opened is the bottommost point of the recess It is set in the range of 0.5-5.0 mm about the separation distance in the opening direction of and the top of a convex part.

  In the medical package of this aspect, the separation distance in the opening direction between the bottom of the concave portion and the apex of the convex portion is set to 0.5 mm or more, thereby securing the actual total length of the inner peripheral edge portion of the fixing region as described above. And the prevention effect of generation | occurrence | production and growth of the delamination by dispersion | distribution of the stress in the thermoplastic resin layer at the time of opening, etc. can be exhibited more effectively. In addition, by setting the separation distance between the bottom of the concave portion and the apex of the convex portion in the opening direction to 5.0 mm or less, the volume compression of the storage portion accompanying the excessively large width dimension of the fixing region of the concavo-convex shape Also, problems such as an increase in package size can be avoided.

A sixth aspect of the present invention is the medical package according to any one of the first to fifth aspects, wherein the concavo-convex shape of the inner peripheral edge portion of the fixing region in the portion to be opened is circumferentially adjacent The pitch between the apexes of the projections is set in the range of 1.0 to 10 mm.

  In the medical package of this aspect, by setting the circumferential direction pitch of the concavo-convex shape to 1.0 mm or more, the peeling film of the thermoplastic resin to be divided in the concavo-convex shape is substantially connected and the target It can be effectively avoided that the prevention effect of the occurrence and the growth of the lamination is reduced. Further, by setting the circumferential pitch of the concavo-convex shape to 10 mm or less, it is possible to effectively avoid that the concavities and convexities are substantially close to a straight line and the same problem occurs.

In the medical packages according to the fifth and sixth aspects described above, the separation distance and the pitch between the bottom point of the concave and the convex portion set on the inner peripheral edge of the fixation region and the apex of the convex portion are constant. It does not have to be.

A seventh aspect of the present invention is the medical package according to any one of the first to sixth aspects, wherein both the first sealing member and the second sealing member are metal. A sealant layer comprising the thermoplastic resin layer is provided on the surface on the side of the sheet on which the sheets are laminated, and the sealant layers of the first sealing member and the second sealing member are heat-fixed and integrated. Thus, the storage area is sealed.

  In the medical package of the present embodiment, the bonding surfaces of the first sealing member and the second sealing member, which are stacked and fixed to each other in the bonding area, are all made of the thermoplastic resin layer as the sealant layer. As a result of the two sealant layers being integrated, it becomes possible to obtain a stronger and more reliable sealing force easily and stably. And by setting the inner peripheral edge portion of the concavo-convex shape according to the present invention to the portion to be opened in the fixing region, the problem that the integrally integrated and fixed sealant layer generates delamination at the time of opening is also avoided. Therefore, good opening operability and operability can be realized together.

An eighth aspect of the present invention is the medical package according to any one of the first to seventh aspects, wherein the medical application product is a contact lens, and the contact lens is stored with the storage solution in the storage area. It is being done.

  In the contact lens package targeted in the present embodiment, the housing has an opening size slightly larger than the periphery of the contact lens, and it is necessary to pick up the contact lens through the small opening. As a result, if the peeling film of the resin generated by delamination during opening is covered with the opening, the contact lens can not be picked up with a fingertip, which causes a great obstacle. Here, in the present embodiment, by applying the present invention to such a package for contact lens, it is possible to stably secure a large opening at the time of unsealing even in the housing portion having a small opening, and the contact lens It becomes possible to pick it easily.

  In addition, even in the case where the contact lens is immersed in the storage solution and the contact lens is sealed to the housing portion, as in the case of a soft contact lens having water content, in the package according to this aspect, the problem due to delamination at the time of opening is avoided Since this also makes it possible to increase the adhesion in the adhesion region which is one of the causes of delamination, the liquid sealability that can be coped with even when an unintended pressure is exerted due to the external pressure etc. and hence also the setting of the reliability It can be realized. Furthermore, if the opening of the storage unit is covered with a peeling film of resin generated by delamination during opening, there is also a problem that the filling liquid bursts out vigorously from an unintended site during the progress of opening, as described above. Such problems can also be effectively avoided by preventing delamination.

  In the medical package according to the present invention as described above, the packaged object is not limited to the contact lens, and various medical use products which individuals, etc. can use as well as medical workers can be targeted, medical use The product may be placed in the container together with accessories etc. for packaging. Moreover, the unevenness provided on the inner peripheral edge portion of the fixing region in the medical package according to the present invention does not have to be constant in shape, size, pitch, etc., and is uneven shape which periodically or aperiodically varies in the circumferential direction. It may be formed of

  According to a first aspect of the present invention relating to a method of manufacturing a medical package, a medical application product is disposed between overlapping surfaces of a first sealing member and a second sealing member, and the first sealing member And at least one of the second sealing member is a composite material of a laminated structure in which a thermoplastic resin layer is provided on an overlapping surface, and the first sealing member and the second sealing member around the medical product. The medical application product is disposed when manufacturing a medical package having a housing portion in which the medical application product is housed in a sealed state by heating and pressing the sealing member and fixing by the thermoplastic resin layer. The first sealing member and the second sealing member are heated while overlapping the pressing direction by heating the first sealing member and the second sealing member by using a pressing member having a pressing surface having an uneven shape and a circumferentially extending pressing edge on the inner circumferential side. It forms around the said accommodating part by mutually pressing and fixing. In fixing region of said first sealing member and said second sealing member, is characterized in providing an opening piece which the inner peripheral edge portion extending in the circumferential direction with an uneven shape.

According to the method of the present aspect of the invention, when the adhesion region of the first sealing member and the second sealing member is heat-welded using a pressing member such as a heating mold to seal the containing portion, By providing the pressing member with the concavo-convex shape, it is possible to form the intended opening-to-be-opened portion having the concavo-convex shape in the fixing region. And, according to the inventive method of this aspect, it becomes possible to advantageously manufacture the medical package according to each of the above-mentioned first to eighth aspects.

  A second aspect of the present invention relating to a method of manufacturing a medical package comprises disposing a medical product between the overlapping surfaces of a first sealing member and a second sealing member, and further comprising the first sealing member. And at least one of the second sealing member is a composite material of a laminated structure in which a thermoplastic resin layer is provided on an overlapping surface, and the first sealing member and the second sealing member around the medical product. The first sealing member is used in manufacturing a medical package provided with a housing portion in which the medical application product is housed in a sealed state by heating and pressing the sealing member and fixing by the thermoplastic resin layer. The housing recess is formed by covering the housing recess formed in the first sealing member with the second sealing member using the second sealing member, and the housing recess in the first sealing member is formed. As the inner circumferential shape extending in the circumferential direction with the uneven shape, The first sealing member formed around the housing portion by pressing and fixing the second sealing member in the overlapping direction while heating the second sealing member around the opening of the housing recess of the member In the fixing region of the second sealing member, the opening peripheral portion is provided with an opening-to-be-opened portion extending in the circumferential direction with a concavo-convex shape.

According to the manufacturing method of this aspect, for example, conventionally used as a contact lens package without using a pressing member having a special uneven shape as described in the first aspect of the present invention according to the above-mentioned manufacturing method If it is a hard case main body like a blister case, it is also possible to form the opening scheduled portion in which the fixing edge becomes uneven by making the opening inner peripheral edge of the recess into an uneven shape. And, according to the manufacturing method of the present aspect, as in the manufacturing method according to the first aspect of the present invention described above, the medical package according to each of the first to eighth aspects described above can be advantageously manufactured. become.

  In the medical package having a structure according to the present invention, excellent unsealing operability is realized by providing the inner peripheral edge portion of the concavo-convex shape in the adhering area of the portion to be opened, and the delamination at the time of opening being suppressed. Also, it is possible to achieve both the improvement of the sealing performance of the storage unit and the good opening operability.

  Also, according to the method of the present invention, it is possible to efficiently manufacture the medical package having the structure according to the present invention described above.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the package for contact lenses as 1st embodiment of this invention in an opened state. It is plane explanatory drawing which shows the state which peeled off the 2nd sheet | seat from the 1st sheet | seat in the package for contact lenses shown by FIG. It is a longitudinal cross-sectional view which shows the unopened state of the package for contact lenses shown by FIG. It is a perspective view of the open state which shows the lens holding member used for the package for contact lenses shown by FIG. It is a perspective view of the closed state which shows the lens holding member shown by FIG. It is explanatory drawing for demonstrating the heat adhesion | attachment with the 1st sheet | seat and 2nd sheet | seat in the package for contact lenses shown by FIG. It is longitudinal cross-section explanatory drawing which shows 1 process for demonstrating the specific example of the manufacturing method of the package for contact lenses shown by FIG. FIG. 8 is a bottom view of the welding mold shown in FIG. 7; It is a plane explanatory view corresponding to Drawing 2 showing the package for contact lenses as a second embodiment of the present invention. It is a bottom view corresponding to FIG. 8 in the welding die used for manufacture of the package for contact lenses shown by FIG. It is the plane explanatory view corresponding to FIG. 2 which shows the package for contact lenses as a comparative example. It is a bottom view which shows the welding metal mold | die used for manufacture of the comparative example shown by FIG. It is a drawing substitute photograph which shows the state of the opening plan part of the fixed area | region at the time of opening of the package for contact lenses which is the Example of this invention shown by FIG. 9, Comprising: (a) shows the whole opening plan part, (B) shows the main part in an enlarged manner. It is a drawing substitute photograph which shows the state of the opening plan part of the fixed area | region at the time of opening of the package for contact lenses which is a comparative example shown in FIG. 11, Comprising: (a) shows the whole opening plan part, (b) Is an enlarged view of the main part. It is a plane explanatory view corresponding to Drawing 2 showing package for contact lenses as a third embodiment of the present invention. It is a bottom view corresponding to FIG. 8 in the welding die used for manufacture of the package for contact lenses shown by FIG. It is a longitudinal cross-sectional view corresponding to FIG. 3 which shows the package for contact lenses as 4th embodiment of this invention. FIG. 18 is an explanatory plan view corresponding to FIG. 2 showing a state in which the lid sheet has been peeled off in the contact lens package shown in FIG. 17;

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  1-3, there is shown a package 10 for a contact lens, which is one embodiment of a medical package constructed in accordance with the present invention. In the package 10, a housing portion 12 which is blocked from the external space is formed in the inside, and in the housing portion 12, a contact lens 14 as a medical application product is stored together with the storage liquid 16 .

  More specifically, the package 10 of the present embodiment includes a first sheet 18 as a first sealing member and a second sheet 20 as a second sealing member. The first sheet 18 and the second sheet 20 are thin and easily deformable flexible sheets having substantially the same planar shape. Then, the first sheet 18 and the second sheet 20 are stacked on the inner surface of each other and fixed to each other around the central portion, thereby forming the housing portion 12 having a predetermined volume in the central portion. ing.

  As described above, in the present embodiment, the first sheet 18 and the second sheet 20 constitute the container main body 22 that defines the housing portion 12 and shields it from the external space. In addition, a fixed area 24 is formed around the housing portion 12 and extends continuously over the entire circumference with a predetermined width.

  Furthermore, in the present embodiment, the first and second sheets 18 and 20 have a substantially rectangular shape, and the accommodation portion 12 is formed to be biased to one side in the long side direction (left side in FIGS. It is done. As a result, on the opposite side to the biasing direction of the storage unit 12, the first and second sheets 18, 20 are unfixed and made to be the unsealing operation unit 26 superimposed. Then, at the end on the side of the opening operation unit 26, the storage unit 12 is opened by applying an opening operation force that the first sheet 18 and the second sheet 20 are pinched by each one finger and peeled off each other. It has become so.

  The first sheet 18 and the second sheet 20 may have a two-sheet structure independent of each other, or one sheet folded back at the short side opposite to the opening operation unit 26. It may be a structure. In the case of a single sheet structure, the sealing structure of the storage portion 12 can be realized without providing the short side portion on the opposite side to the unsealing operation portion 26 in the fixing area 24.

  Then, the contact lens 14 is accommodated in a state of being immersed in the storage solution 16 in the accommodation portion 12 having a sealed structure. As a result, for example, even in the case of the water-containing soft contact lens 14, the contact lens 14 is kept in a swollen state for a predetermined period of time from the manufacturer to the market until the user opens it.

  The contact lens 14 and the storage solution 16 may be stored directly in the storage section 12 defined by the first and second sheets 18 and 20. However, in the present embodiment, since the first and second sheets 18 and 20 which are easily deformed are employed, the contact lens 14 is accommodated in the hard lens holding member 28 and disposed in the housing portion 12. Is desirable.

  The lens holding member 28 holds the contact lens 14 in a swollen state to the storage solution 16 while reducing or preventing the external force acting on the contact lens 14, and when opening the package 10, the contact lens 14 is easily pinched with a fingertip. It is desirable to be able to remove it. Specifically, a lens holding member 28 having a structure as shown in FIGS. However, such a lens holding member 28 is not essential in the present invention, and is also described in Japanese Patent No. 4520532 and Japanese Patent Laid-Open No. 2014-218255 previously disclosed by the present applicant. As such, the construction and operation will be briefly described below.

  That is, in the lens holding member 28 employed in the present embodiment, the lower plate 30 and the upper plate 32 are connected by the hinge portion 34. The upper and lower plates 32, 30 are pivoted relative to each other around the hinge portion 34, so that the upper and lower plates 32 and 30 can be deformed into the unfolded state shown in FIG. 4 and the folded state shown in FIG. Further, on the opposite side of the upper and lower plates 32 and 30 opposite to the hinge 34, an engaging portion 36 for temporarily holding the folded state is provided. The upper and lower plates 32 and 30 may be integrally molded, for example, by injection molding or the like using a hard synthetic resin material having a holding strength to a predetermined shape, such as polypropylene or polyethylene.

  Further, a substantially dome-shaped lower holding portion 38 and an upper holding portion 40 which are convex upward are provided at the central portions of the lower plate 30 and the upper plate 32, respectively. Further, a lower outer peripheral plate portion 42 and an upper outer peripheral plate portion 44 which are spread like a flange are formed on outer peripheral edge portions of the lower holding portion 38 and the upper holding portion 40. Then, in the folded state in which the upper and lower outer peripheral plate portions 44 and 42 are superimposed on each other, a holding area 46 having a predetermined volume in which the contact lens 14 is accommodated and held is defined between the overlapping surfaces of the upper and lower holding portions 40 and 38. It is supposed to be

  As shown in FIGS. 3 and 7, the holding area 46 is formed one size larger than the contact lens 14 and is formed with a predetermined gap around it to position and hold the contact lens 14 while preventing inversion. Although it is desirable that the size be obtained, for example, it is also possible to accommodate more compactly in a state where external force is applied from both the front and back sides of the contact lens 14 to be crushed. Further, at least one of the lower holding portion 38 and the upper holding portion 40 (only the upper holding portion 40 in the present embodiment) has a through hole 48 which allows the holding region 46 to communicate with the outside to allow the flow of the storage solution 16. It is desirable to form.

  Then, as shown in FIG. 3, such a lens holding member 28 is configured such that the lower plate 30 is placed on the first sheet 18 and the second sheet 20 is placed on the upper plate 32. , And is accommodated and disposed in the accommodation portion 12 of the container main body 22. Incidentally, as shown in FIG. 1, in the lens holding member 28, the engagement portion 36 is positioned on the opening operation portion 26 side of the container main body 22, and the hinge portion 34 is opposite to the opening operation portion 26. It is located on the side. In addition, as shown in FIG. 1, the first sheet 18 and the first sheet 18 are fixed at the fixing portions 49 in which the outer peripheral plate portions 42 and 44 of the lower plate 30 and the upper plate 32 are set at appropriate numbers. The two sheets 20 are fixed to each other.

  Thus, when the contact lens 14 is used, the first sheet 18 and the second sheet 20 are peeled off from the unsealing operation unit 26 side to unseal the container body 22. The lower plate 30 and the upper plate 32 of the lens holding member 28 are opened together with the second sheet 20. Then, the contact lens 14 is exposed to the outside and can be picked up with fingers only by opening the container main body 22 without requiring a special operation for opening the lens holding member 28. It has become so.

  Thus, the contact lens 14 is accommodated in the lens holding member 28 as described above, and the lens holding member 28 is disposed between the overlapping surfaces of the first sheet 18 and the second sheet 20 constituting the container body 22. The first sheet 18 and the second sheet 20 are fixed to each other in the fixing area 24 set around the member 28 to form the housing portion 12 of the sealing structure in which the contact lens 14 is housed together with the storage liquid 16 Do.

  The first sheet 18 and the second sheet 20 may be fixed to each other in the fixing area 24 by, for example, bonding, but heat welding is preferable in terms of manufacturing control, reliability, stability, etc. preferable. That is, by adopting a composite material of a laminated structure having a thermoplastic resin layer on the overlapping surface as at least one of the first sheet 18 and the second sheet 20, the first sheet 18 can be made of such a thermoplastic resin layer. And the second sheet 20 can be heat fixed to seal the container 12. The first and second sheets 18 and 20 may be entirely made of a synthetic resin material such as nylon, polyester or polyolefin, but in particular, a metal film such as an aluminum alloy may be used. By forming a laminate sheet by sandwiching and laminating with a resin layer, it is possible to impart gas barrier properties to the storage section 12, and it is further suitable for sealing the storage solution 16, preventing entry of bacteria, and the like.

  More specifically, as the first sheet 18 and the second sheet 20 of the present embodiment, as shown as a model in FIG. 6, an intermediate base layer 50 made of a metal film such as an aluminum alloy or the like. And a laminate sheet of a laminated structure of a front base material layer 52 made of a resin film such as polyester, polyethylene, polyamide and polypropylene and a sealant layer 54 made of a thermoplastic resin film such as polypropylene and polyethylene Ru. The first sheet 18 and the second sheet 20 made of such laminate sheets are superimposed on each other and heated to the melting temperature of the sealant layer 54 in the fixing area 24 while being mutually pressed to each other. The sealant layers 54, 54 are fixed by melting and integrating into a single resin layer. Moreover, printing etc. may be given to the outer surface of the front base material layer 52 as needed.

  When the first sheet 18 and the second sheet 20 are fixed by heating in the fixing area 24, for example, the upper and lower fixing dies 56 and 58 as shown in FIGS. By sandwiching the fixing regions 24 of the first and second sheets 18 and 20 between the two molds 56 and 58 and heating and pressing them, the sealant layers 54 and 54 can be integrated and fixed. At that time, in addition to heat transfer heating the fixing region 24 by the fixing die 56 as a pressing member, it is also possible to apply thermal energy together with the pressing force to the fixing region 24 by high frequency heating or ultrasonic heating.

  Further, in the present embodiment, it is necessary to inject the storage solution 16 when the fixed area 24 is fixed by heating to seal the storage section 12. Therefore, for example, as shown in FIG. 7, a recess 59 for forming the accommodation portion 12 is formed in advance on the second sheet 20, and the lens holding member 28 (contact lens 14) is formed on the recess 59. After the storage solution 16 is stored, the fixing area 24 may be fixed by heating in a state where the recess 59 is covered with the first sheet 18 in a state in which FIG. 7 is turned upside down. Further, the bag-like housing portion 12 is formed by heating and fixing only the three sides of the fixing region 24 first, and the storage solution 16 is transferred to the housing portion 12 in a state where the non-fixed side portion is opened upward. After pouring, it is also possible to seal the housing portion 12 by heating and fixing the remaining one side from the left and right sides (the overlapping direction of the first and second sheets 18 and 20).

  Here, the fixing area 24 includes the unsealing planned portion 60 extending in the width direction (direction perpendicular to the unsealing direction) on the unsealing operation portion 26 side of the housing portion 12. Then, the inner peripheral edge portion 62 of the portion to be unsealed 60 has a concavo-convex shape which is curved in a wave shape repeatedly extending in and out in the width direction of the housing portion 12 which is the circumferential direction of the fixed region 24. In particular, the inner peripheral edge portion 62 of the present embodiment has a substantially sin-like waveform in which concavities and convexities are alternately arranged periodically and repeatedly in a substantially constant shape, and three concave bottom portions (the bottom points of concave portions in the entire width range ) And two convex apexes (apex of convex part) 66 are formed.

  According to the fixing area 24 having the uneven inner peripheral edge portion 62, when the user operates the unsealing operation unit 26 to open the container body 22, it extends from the inner peripheral edge 62 of the fixing area 24. It becomes possible to suppress the generation and growth of the resin thin film due to the delamination that is generated.

  That is, as illustrated in FIG. 6, in the fixing area 24 where the first sheet 18 and the second sheet 20 are heat-fixed, the sealant layers 54 of both sheets 18 and 20 are integrated, The sealant layer 54 is easily delaminated from the intermediate base material layer 50 of one of the sheets 18 (20) of which the adhesion strength is relatively lowered. Then, when the delaminated sealant layer 54 grows in the unsealing direction as the unsealing operation proceeds, the film-like sealant layer 54 is formed so as to cover the containing portion 12 formed between the sealant layers 54, 54 of both sheets 18, 20. A peeling layer is generated, which covers or narrows the opening of the housing portion 12, resulting in a reduction in the unsealing operability and a hindrance to the removal workability of the contact lens 14.

  Here, in the package 10 according to the present embodiment, the actual peripheral length (actual total length) along the inner peripheral edge portion 62 is obtained by providing the inner peripheral edge portion 62 of the fixing region 24 of the unsealing operation unit 26 with an uneven shape. By setting the length longer than the linear width dimension, the volume of the sealant layer 54 causing delamination can be dispersed in a wider range, and the tensile strength at break of each portion can be reduced. In addition, a portion on the inner peripheral edge 62 of the adhesion region 24 to which the delamination force is first applied at the time of opening is divided into a plurality of concave bottom portions 64 and set, and the adjacent concave bottom portions 64 are divided by the convex apex 66 By doing this, the sealant layer 54 in which the volume is dispersed in each of the concave bottom portions 64 is locally strongly pulled.

  As a result, the unsealing operation force efficiently acts on the sealant layer 54 as a local tensile breaking force, and it becomes possible to cut on the inner peripheral edge 62 of the fixing region 24.

  Further, the inner peripheral edge portion 62 of the fixing area 24 gradually spreads and extends as it goes forward in the opening direction from the concave bottom portions 64 toward the pair of convex apex portions 66, 66 on both sides in the width direction. Therefore, even if delamination occurs at the concave bottom portion 64 of the inner peripheral edge portion 62, separation of both sheets 18, 20 with respect to the film-like release layer delaminated at the concave bottom portion 64 along with the progress of opening. Not only in the direction but also in the width direction, the tensile force which is gradually increased acts efficiently to break at an early stage of the progress of the opening, thereby preventing the growth of the release layer. In addition, when the crack of the fracture occurs in the peeling layer at the concave bottom portion 64, the crack gradually spreads on both sides as the opening progresses, and the crack which is applied by the tensile force exerted from the portion extending toward the convex portions 66, 66 progresses. Growth of the release layer can be prevented more effectively.

  Furthermore, even in the case where the peeling layer due to delamination first generated at the concave bottom portion 64 of the inner peripheral edge 62 at the time of the opening operation is prevented or broken, in the fixing region 24 of the opening operation portion 26 until the end of the opening operation. The portion that remains in the adhered state and may finally cause delamination is a tapered convex portion 66 having a tapered shape in which the width dimension gradually decreases toward the inner peripheral side in the opening direction. Therefore, even if the exfoliation layer occurs due to the delamination at the relevant site, the width dimension is small, and the local local action of the peeling force can easily cause breakage, thereby preventing the growth of the exfoliation layer. is there.

  When the effect of preventing peeling layer generation and growth due to delamination during the opening operation as described above is further advantageously obtained, the further enhancement and concentration of tensile force applied to the peeling layer generated by delamination can be obtained. The pitch (P) of the concave bottom portion 64 or convex top portion 66 is 10 mm or less, and the asperity depth (D) which is the separation distance between the concave bottom portion 64 and the convex top portion 66 in the opening direction is 0.5 mm or more. Alternatively, it is preferable to set the tip end side included angle (θ) in the vicinity of the convex portion 66 which is tapered toward the inner side of the accommodation portion 12 in the opening direction to 135 degrees or less (see FIG. 2).

  In addition, if the pitch (P) is too small, the function of the concave bottom portion 64 is substantially lost, and the effect of suppressing the generation and growth of the above-described peeling layer by the uneven shape of the inner peripheral edge portion 62 of the fixed region 24 It is desirable to set the pitch (P) to 1.0 mm or more, because there is a problem that it becomes difficult to be effectively exhibited. Furthermore, if the asperity depth (D) is too large, the dimension in the opening direction required to form the fixation region 24 becomes unnecessarily large and the volume of the storage portion 12 is compressed, or the container body 22 It is desirable to set the unevenness depth (D) to 5.0 mm or less because there is a problem such as an increase in size. Although it is desirable that the tip side depression angle (θ) in the vicinity of the convex apex 66 be set within a range of 30 to 120 degrees, such setting of the tip side depression angle (θ) is not essential. It is also possible to adopt a rectangular wave (digital wave) -like concavo-convex shape or the like in which) is substantially 0 degree.

  The package 10 for the contact lens in this embodiment configured as described above is distributed from the manufacturer to the market in the unopened state shown in FIG. 3 and provided to the user. Then, when the user uses the contact lens 14, the user operates the opening operation unit 26 with his fingertip to peel off the first sheet 18 and the second sheet 20 to open the sheet. At this time, the portion to be opened 60 extending in the width direction of the accommodation portion 12 is first to be pulled out of the adhesion region 24 that seals the periphery of the accommodation portion 12. By forming the inner peripheral edge portion 62 in a concavo-convex shape, generation and growth of a resin film (release layer) due to delamination of the sealant layer 54 can be prevented.

  As a result, the inner peripheral edge 62 of the fixed area 24 is unsealed cleanly, and the container 12 is not covered with the resin film due to delamination, and the fixed area 24 is peeled off cleanly as shown in FIG. The large opening of the housing portion 12 enables the user to easily pick the contact lens 14 with his / her finger.

  In addition, since the inner peripheral edge portion 62 of the portion to be opened 60 extending in the width direction in the fixing region 24 has a concavo-convex shape, in the region of the concavo-convex depth (D) in FIG. By providing the non-fixed portion, the length of the fixed portion on a straight line extending in the opening width direction (vertical direction in FIG. 2) is substantially reduced. As a result, when the user peels off the fixing area 24 of the opening planned portion 60 from the outer peripheral edge 68 toward the inner peripheral edge 62 in the opening direction, the fixing area 24 extends in the width direction. In the opening scheduled portion 60 in which the required opening power tends to increase, the required opening power is reduced, and the opening operability is improved.

  In particular, in the present embodiment, in the fixing area 24 of the portion to be unsealed 60, an uneven shape corresponding to not only the inner peripheral edge 62 but also the outer peripheral edge 68 is provided. In addition, the adhering area 24 of the opening scheduled portion 60 is formed with a substantially constant width dimension (thickness) by the corresponding uneven shape of the inner and outer peripheral edge portions 62 and 68, and in the present embodiment, the width direction of the storage portion 12 The fixed area 24 has a substantially constant width dimension over the entire circumference of the accommodation portion 12 by combining the left and right fixed areas extending in the unsealing direction on both sides and the rear fixed area extending in the width direction in the opening direction rear end side of the accommodation portion 12. It is annularly formed.

  Then, the outer peripheral edge portion 68 of the fixing area of the opening planned portion 60 is also provided with the concavo-convex shape, so that even at the first stage of peeling off the fixing area 24 of the opening planned portion 60 in the opening direction, The length of the fixing portion on the straight line extending substantially is substantially reduced to reduce the required opening force and further improve the opening operability.

  Next, FIG. 9 shows a contact lens package 70 according to a second embodiment of the present invention. This embodiment exemplifies another aspect of the concavo-convex shape formed on the portion to be opened 60 and the inner peripheral edge portion 62 in comparison with the first embodiment, and has a structure similar to that of the first embodiment The same members and parts as those in the first embodiment are denoted by the same reference numerals in the drawings for easy understanding.

  That is, the portion to be opened 60 of the fixing region 24 in the package 70 of the present embodiment is formed into an arc shape which is curved in an arc shape and protrudes toward the outer peripheral side as a whole. In addition, while the outer peripheral edge 68 of the portion to be opened 60 has a smooth arc shape, the inner peripheral edge 62 is such that concave portions having a substantially semicircular shape are continuously formed at a substantially constant pitch (P). Thus, the tapered convex portions protruding toward the accommodation portion 12 between the adjacent concave portions are formed in a concavo-convex shape having a predetermined pitch (P).

  As a result, in the concavo-convex shape of the present embodiment, the pitch (P) of the concave and convex portions and the tip side depression angle (θ) of the convex portion although the concavo-convex depth (D) is not largely different compared to the first embodiment. By setting each of them to a small size, it becomes an approximately serrated uneven shape.

  In addition, the package 70 of the present embodiment provided with the inner peripheral edge portion 62 having such saw-tooth shaped concavo-convex shape in the fixing region 24 of the unsealing operation unit 26 can be manufactured similarly to the package 10 of the first embodiment. it can. For example, instead of the fixing mold 56 shown in FIG. 8 in the first embodiment, a fixing metal having a pressing surface shape corresponding to the fixing area 24 having a target uneven shape as shown in FIG. The package 70 of the present embodiment is manufactured by sealing the container 12 by adopting the mold 72 and heating and fixing the sealant layers 54, 54 between the overlapping surfaces of the first sheet 18 and the second sheet 20. It will be possible to

  Also in the package 70 according to the present embodiment, the resin film by the delamination of the sealant layer 54 by the inner peripheral edge 62 of the fixing region 24 having the concavo-convex shape in the opening scheduled portion 60 as in the first embodiment. The generation and growth of the (peeling layer) can be prevented, and the user can easily exert the opening operability and the easy picking of the contact lens after opening.

  Further, in the package 70 of the present embodiment, since the inner peripheral edge portion 62 of the fixing region 24 having the concavo-convex shape extends in the width direction with a curved shape that is convex toward the outer periphery as a whole, the concavo-convex shape in the opening operation direction The presence area (L) of the inner peripheral edge portion 62 to which is attached can be set larger than the asperity depth (D). As a result, the reduction effect of the unsealing operation force achieved by the uneven shape of the inner peripheral edge portion 62 can be exhibited over a longer unsealing distance in the unsealing operation direction.

  Although the outer peripheral edge portion 68 of the fixing region 24 in the package 70 according to the present embodiment is not provided with a concavo-convex shape, since the whole is in a curved shape, the fixing portion on a straight line extending in the opening width direction The length is substantially reduced to reduce the required opening force. However, it is possible to add an uneven shape to the outer peripheral edge 68 of the curved shape.

  Incidentally, an experiment was conducted to confirm the unsealing property and operability of the package 70 of the second embodiment having the concavo-convex fixed region 24 shown in FIG. 9 as a prototype. In the package 70 used in this experiment, each value in FIG. 9 is the radius of curvature (r) of the concave bottom (r) = 1.00 mm, the concavo-convex depth (D) = 1.00 mm, and the pitch of the concave and the convex (P) The width dimension (B) of the fixing region 24 was 2.20 mm, and the curvature radius (R) of the outer peripheral edge 68 of the fixing region 24 was 26.5 mm. Further, as a product of the comparative example, as shown in FIG. 11, the inner peripheral edge portion 62 of the fixing region 24 is not provided with the uneven shape, and is a portion to be opened 60 having a curved shape extending in a substantially constant width (B). Prepared a contact lens package 74 having the same structure as the package 70 of the second embodiment. As a reference, FIG. 12 shows a fixing mold 76 used instead of the fixing mold 72 of the example product in the heating and fixing of the fixing area 24 in the package 74 of the comparative example.

  In Experiment 1, when heating and pressing the fixed regions 24 of the first and second sheets 18 and 20 in a fixed mold by heating and fixing, the heating setting temperature is 240 ° C., and the pressure setting load is 435 N for 1.5 seconds. With respect to the example product fixed by heating and pressing, the occurrence of delamination is confirmed by pulling the unsealing operation part 26 away from each other to separate the adhering area 24 of the part to be opened 60 and opening it. I did an experiment. Moreover, the same experiment was performed using the thing which heat-pressed the adhering area | region and adhered also about the comparative example goods on the same conditions.

  As a result, in the example product, as shown in FIGS. 13 (a) and 13 (b), the sealant generated by delamination along the inner peripheral edge 62 of the bonded region 24 of the tear-off portion 60. Although a slight peeling film of the layer is observed, it hardly grows as the opening progresses. That is, it was confirmed that the peeling film was not substantially generated on the inner peripheral side of the fixed region 24, and the storage portion 12 could be opened sufficiently large over the whole.

  On the other hand, in the comparative example, as shown in FIGS. 14 (a) and 14 (b), the peeling film of the sealant layer generated by the delamination at the inner peripheral edge 62 of the bonded region 24 of the tear-off portion 60 However, by the fact that it grows so greatly during the progress of the opening and extends so as to spread into the opening of the housing part 12, a large peeling force remains even when the opening progresses, so the opening feeling is bad and the opening state of the housing part is also The partial covering with the peeling film may interfere with the subsequent picking of the contact lens.

  In Experiment 2, when fixing the fixing regions 24 of the both sheets 18 and 20 with heating using the fixing die, the heating setting temperature is made different in the range of 200 to 240 ° C. to make the fixing strength of the fixing regions 24 different. It is the tensile force (maximum tensile load) required to pull the unsealing operation part 26 away from each other in the direction away from each other and to tear open the adhering region 24 of the part to be opened 60 for each of the five types of examples and comparative examples. The opening initial peel strength was measured. The results of such measurement are shown in [Table 1].

  From the results shown in Table 1, assuming that the set temperature at the seal processing of the fixed region 24 by heating and pressing is set to 220 ° C. ± 10 ° C., the peel strength (β) of the comparative example is 7.85 to 14 A difference of about 7N will occur in the range of .55N. On the other hand, the peel strength (.alpha.) Of the product of this example does not generate an equivalent 7N difference even in a wide set temperature range of. +-. 20.degree. C. even over 200-240.degree. Therefore, the product of the present embodiment has a larger allowable temperature range of the product of the comparative example than the product of the comparative example when satisfying the adhesive strength acceptable for the adhesive region 24, and the management is easy and the generation of defective products is suppressed. I understand that.

  In addition, as the difference of the variation in the peel strength due to the heating temperature change is also understood from the result of Experiment 1, the peeling layer due to the delamination which can not be avoided at the time of opening in the comparative example is wider as the heating temperature rises. By generating in the range, the resistance of the opening operation by peeling off both sheets is additively increased, but in the product of the present invention, the generation and growth of the peeling layer by the delamination are prevented. From this, it is considered that the increase in the peel strength (peeling resistance) is suppressed to the increase in the simple adhesion strength of the adhesion region 24 even if the heating temperature rises.

  As the experiment 3, the operation feeling at the time of opening was evaluated by the sensory test by three persons about the same example goods and the comparison example goods as the above-mentioned experiment 2, respectively. In addition, at the time of this sensory test, the product of the embodiment and the comparative product having different set temperatures are also provided in order to each person in charge of testing without notifying them of any package in random order and judging the operation feeling at the time of opening Adopted a blind inspection. The results of this determination are shown in [Table 2].

  From the results shown in [Table 2], the evaluation by any one of the testers is the same for all the packages, and in the comparative example, those whose operation feeling at the time of opening is judged to be good have a slightly set temperature of 210 ° C. In contrast to only one package described above, in the product of the example, it was evaluated that the openability is good for any of a wide set temperature range of ± 20 ° C. ranging from 200 ° C. to 240 ° C. Considering the results of this experiment in combination with the results of Experiment 2 above, the example product according to the present invention can stably exhibit excellent operability under a wide setting freedom of sealing conditions. Becomes clearer.

  In addition, as the influence which such a heating temperature difference gives to opening operation feeling is understood also from the results of Experiments 1 and 2, in the comparative example product, the heating and fixing at a set temperature exceeding 210 ° C. peels off the opening operation portion In this case, it is considered that the occurrence and the growth of the peeling layer are prevented even if the heating temperature is raised in the product of the present invention, while the peeling layer due to the delamination becomes large at the time and the opening operation is hindered. . In addition, even if the pressure setting load is the same 435N, the opening operation part of the embodiment is a plurality of concave portions periodically formed, and the area of the fixing region is substantially reduced, so that the load per unit area is a comparative example. It works bigger. As a result, at the set temperature of 200 ° C., the unsealing operation part of the embodiment is given good adhesion strength, but the unsealing operation part of the comparative example is hardly given sufficient adhesion strength, and in the comparative example, the adhesion strength and the like It is considered that the lack of sealing performance was felt and it was judged to be inferior.

  The embodiments of the present invention and experimental results using the same have been described above in detail, but the present invention is not to be interpreted as being limited by the specific descriptions and the disclosed contents described above.

  For example, as shown in FIG. 15, as the fixing region 24 in the unsealing operation unit 26, the uneven shape of the inner peripheral edge 62 of the first embodiment and the outer peripheral edge 68 of the second embodiment It is also possible to adopt the curved convex shape in combination with each other to form a package 80 for a contact lens according to the third embodiment. A fixing mold 82 used in place of the fixing mold 72 in the first and second embodiments in the heating and fixing of the fixing area 24 in the package 80 is shown in FIG.

  In each of the first to third embodiments, a flexible sheet made of a laminate material or the like is employed as the first and second sealing members, but, for example, JP-A-7-322911 can be used. The present invention can also be applied to blister packages as described in Japanese Patent Publication No. 4691820 and the like.

  The blister package to which the present invention is applied may be specifically configured as shown in, for example, FIGS. That is, the package 84 for a contact lens according to the fourth embodiment of the present invention shown in FIGS. 17 to 18 includes a blister container 86 as a first sealing member formed of a hard synthetic resin material. It is comprised from the cover sheet 88 as a 2nd sealing member which consists of a lamination sheet similar to the 1st and 2nd sheet of the said embodiment. Also in this embodiment, the same reference numerals as in the embodiment are given to the members and portions having the same structure as the embodiment.

  The blister container 86 has a rigidity that does not significantly deform due to the external force that can be applied by transportation and storage in a state where the contact lens 14 is accommodated and by an opening operation by the user. For example, it may be formed as an integrally molded article of a synthetic resin material such as fluorine resin, polyamide, polyarylate, polyethylene, polyethylene terephthalate, polyvinyl chloride and the like.

  In addition, the blister container 86 is formed with a housing recess 90 located at a substantially central portion and opening upward, and a flange-like plate-like portion 92 extending outward from the opening peripheral portion of the housing recess 90. Is formed. Furthermore, the lid sheet 88 has a planar shape of substantially the same size as the outer peripheral shape of the plate-like portion 92 of the blister container 86. Then, a lid sheet 88 superposed on the upper surface of the blister container 86 is fixed to the plate-like portion 92 around the opening of the housing recess 90 so as to cover the opening of the housing recess 90.

  That is, in the present embodiment, the fixing region 24 is formed in the overlapping portion of the upper surface of the plate-like portion 92 which spreads around the accommodation recess 90 of the blister container 86 and the lid sheet 88 overlapped thereon. Then, the blister container 86 and the lid sheet 88 are fixed in the fixed area 24 and the opening of the storage recess 90 is sealed, thereby forming the storage section 12 in which the contact lens 14 and the storage solution 16 are stored. There is.

  Further, the plate-like portion 92 and the lid sheet 88 of the blister container 86 overlapped with each other extend outward (rightward in the drawing) on a part of the outer periphery of the fixing area 24 and also extend In the bottom portion, the unsealing operation portion 26 is configured in which the plate-like portion 92 and the lid sheet 88 are not adhered. Then, when using the contact lens 14, the user holds the blister container 86 and the lid sheet 88 with the left and right fingers by the unsealing operation unit 26 and pulls them so as to separate them from each other. By gradually peeling away in the opening direction from the right side to the left side, the housing recess 90 can be opened and the contact lens 14 can be picked up with a fingertip.

  Here, in the blister container 86 of the present embodiment, the opening peripheral edge portion of the housing recess 90 is the inner peripheral edge portion 62 of the fixing area 24 to the lid sheet 88. Further, in the unsealing planned portion 60 which is located on the side of the unsealing operation part 26 and extends in the width direction (vertical direction in FIG. 18) among the fixing regions 24, a concavo-convex shape is given along the inner peripheral edge 62 There is. In the present embodiment, as in the second embodiment, the substantially semicircular concave portions are periodically and closely arranged at predetermined intervals, and as a whole, the concave and convex shape having a substantially sawtooth shape is obtained.

  The package 84 for a contact lens provided with a container main body consisting of such blister container 86 and lid sheet 88 is intended for the opening peripheral edge of the housing recess 90 in a mold for manufacturing the blister container 86. By providing the concavo-convex shape, it is possible to add the concavo-convex shape to the opening peripheral portion of the housing recess 90 simultaneously with the formation of the blister container 86. Thereafter, a lid sheet 88 made of a separately prepared laminate sheet is placed so as to cover the containing recess 90 of the blister container 86 containing the contact lens 14 and the storage solution 16, and the both are fixed in the fixing area 24. By doing this, the intended package 84 of the present embodiment can be obtained.

  Further, although it is possible to fix the blister container 86 and the lid sheet 88 in the fixing area 24 by adhesion as in the embodiment described above, as a pressing member provided with a pressing surface substantially corresponding to the fixing area 24 By pressing and heating the blister container 86 and the lid sheet 88 in the overlapping direction using the fixing mold of the above, efficient fixing can be realized. At this time, in the present embodiment, the opening peripheral edge portion of the accommodation recess 90 of the blister container 86 is provided with an uneven shape in advance, so it is not necessary to provide the uneven peripheral shape on the inner peripheral edge portion of the fixed mold. That is, when the lid sheet 88 is heated and pressed against the blister container 86 by the upper pressing member (sticking mold) while supporting the bottom of the blister container 86 by the lower pressing member, the upper pressing member The pressing surface of can be made into a planar shape. Even if the upper pressing member is a flat pressing surface, the opening peripheral edge of the housing recess 90 in the blister container 86 made of a hard material is uneven, so that the effective pressing force is uneven. Only in the region having the inner peripheral edge portion of C., the target fixing region 24 is formed.

  Also in the package 84 of this embodiment, the resin film (peelable layer) by the delamination of the sealant layer in the lid sheet 88 at the time of opening by the inner peripheral edge portion 62 of the fixed area 24 which is unevenly shaped at the opening scheduled portion 60. The same effects as in the first to third embodiments can be exhibited, such as the occurrence and the growth of the lens can be prevented, and the user can easily exert the opening operability by the user and the picking ability of the contact lens after opening. It will be possible.

  In the first to fourth embodiments, a package for contact lens as one aspect of a medical package containing a contact lens as a medical application is described, but the present invention is not limited to this. . For example, medical products used in the market, provided, distributed, stored, provided, etc. individually or as a set of medical products used in the medical field such as IOL inserters, syringes, puncture needles, gauze, and tweezers. In the package, an aspect in which the fixing structure between the overlapping surfaces of the first sealing member and the second sealing member in the embodiment is applied is also included in the present invention.

  Moreover, in the first to fourth embodiments described above, there is described an aspect in which the concavo-convex shape of the inner peripheral edge portion of the fixing region in the portion to be opened is a waveform curved continuously continuously in the circumferential direction. The concavo-convex shape of the inner peripheral edge portion of the fixing region in the present invention is not limited to the waveform, and it is not necessary to be periodic or continuous. For example, an aspect in which the uneven shape of the inner peripheral portion is in the shape of a chevron (in the form of a lightning bolt) bent by continuously forming a linear inclined side with an apex angle and a valley angle of a predetermined angle is included in the present invention. However, the number of recesses and projections is not limited, and the effects of the present invention can be achieved as long as the number of recesses is at least two.

  In the first embodiment, the upper and lower fixing dies 56 and 58 are used to heat and weld the fixing regions 24 of the stacked first and second sheets 18 and 20. Although the corrugating shape corresponding to the adhering area 24 is given, the adhering mold 58 may be corrugated in addition to or instead of the adhering mold 56.

  In addition, although not listed one by one, the present invention can be implemented in an embodiment to which various changes, modifications, improvements, etc. are added based on the knowledge of those skilled in the art, and such embodiments are the present invention. It is needless to say that all are included within the scope of the present invention unless they depart from the spirit of the present invention.

10, 70, 80, 84: package for contact lens (medical package), 12: accommodation unit, 14: contact lens (medical application product), 18: first sheet (first sealing member), 20 : Second sheet (second sealing member), 24: adhesion area, 50: intermediate base layer, 52: surface base layer, 54: sealant layer, 56, 58, 72, 76, 82: adhesion gold Mold 60: intended opening part 62: inner peripheral part 64: concave bottom part 66: convex top part 86: blister container (first sealing member) 88: lid sheet (second sealing member) 90: Containment recess

Claims (7)

The medical application product is accommodated between the overlapping surfaces of the first sealing member and the second sealing member by overlapping and fixing the first sealing member and the second sealing member. In the medical package in which the housing portion is formed,
At least one of the first sealing member and the second sealing member is a composite material of a laminated structure having a thermoplastic resin layer on an overlapping surface, and the first sealing member is made of the thermoplastic resin layer. And the second sealing member is heat-sealed to seal the housing portion, and the first sealing member and the second sealing member formed around the housing portion. In the fixing area, a single curved convex outer peripheral edge curved toward the outer periphery in the opening width direction of the housing portion and an uneven inner peripheral edge having at least two concave portions in the opening width direction of the housing portion medical packaging, wherein the opening piece which with a the part extending in the circumferential direction is provided. The medical application product is accommodated between the overlapping surfaces of the first sealing member and the second sealing member by overlapping and fixing the first sealing member and the second sealing member. In the medical package in which the housing portion is formed,
Wherein and first accommodation recess sealing member is formed on said first sealing member is a rigid material is covering by the second sealing member, said first sealing member and said At least one of the second sealing members is a composite material of a laminated structure having a thermoplastic resin layer on an overlapping surface, and the first sealing member and the second sealing member are formed of the thermoplastic resin layer. together with the housing part by being heated fixed is sealed, in the fixing region of the first sealing member and said second sealing member formed around the accommodating portion, said first seal The opening portion of the housing recess formed in the stopper member has an uneven shape having at least two recessed portions in the opening width direction of the accommodating portion and has an inner peripheral shape extending in the circumferential direction, whereby the inner peripheral edge portion of the uneven shape A medical package characterized in that an opening scheduled portion extending in a circumferential direction is provided. The medical package according to claim 1 or 2 , wherein the concavo-convex shape of the inner peripheral edge portion of the fixing area in the portion to be opened is a corrugated or chevron curved or bent periodically and continuously in the circumferential direction. The opening irregularities of the inner peripheral edge portion of the fixing region of the scheduled portion is, the inner circumferential claim which is tapered convex width dimension gradually becomes smaller toward the inner peripheral side in the convex portion protruding toward 1-3 The medical package according to any one of the above. The uneven shape of the inner peripheral edge portion of the fixed area in the portion to be opened is set within a range of 0.5 to 5.0 mm for the separation distance in the opening direction between the bottommost point of the recess and the apex of the protrusion. The medical package according to any one of claims 1 to 4 . Any the uneven shape of the inner peripheral edge of the fixing region of the opening piece is circumferential about the pitch between the apexes of the adjacent convex portions in the direction of the claims 1-5 which is in the range of 1.0~10mm Medical package according to any one of the preceding claims. A medical application is disposed between the overlapping surfaces of the first sealing member and the second sealing member, and at least one of the first sealing member and the second sealing member is the overlapping surface. A composite material of a laminated structure provided with a thermoplastic resin layer is formed, and the first sealing member and the second sealing member are heated and pressed around the medical application product and fixed by the thermoplastic resin layer When manufacturing the medical package provided with the accommodating part by which the said medical use goods were accommodated in sealing condition,
The housing portion is formed by covering the housing recess formed in the first sealing member with the first sealing member as a hard material with the second sealing member, and
The opening of the housing recess in the first sealing member is formed into an inner circumferential shape extending in the circumferential direction with a concavo-convex shape, the second opening around the opening of the housing recess of the first sealing member The inner peripheral edge portion of the first sealing member and the second sealing member in the fixing region formed around the housing portion by pressing and fixing the sealing member in the overlapping direction while heating the sealing member. A method of manufacturing a medical package, comprising: an opening-to-be-opened portion extending in the circumferential direction with an uneven shape.