WO1998040285A1 - Sample package - Google Patents

Sample package

Info

Publication number
WO1998040285A1
WO1998040285A1 PCT/US1998/004463 US9804463W WO9840285A1 WO 1998040285 A1 WO1998040285 A1 WO 1998040285A1 US 9804463 W US9804463 W US 9804463W WO 9840285 A1 WO9840285 A1 WO 9840285A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
device
film layer
microstructured
top
surface
Prior art date
Application number
PCT/US1998/004463
Other languages
French (fr)
Original Assignee
Minnesota Mining And Manufacturing Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F5/00Means for displaying samples
    • G09F5/04Cards of samples; Books of samples
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; MANICURING OR OTHER COSMETIC TREATMENT
    • A45D40/00Casings or accessories for storing or handling solid or pasty toilet or cosmetic substances, e.g. shaving soap, lipstick, make-up
    • A45D40/0087Casings or accessories for storing or handling solid or pasty toilet or cosmetic substances, e.g. shaving soap, lipstick, make-up for samples
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/015Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12Apparatus, e.g. holders, therefor

Abstract

A product sampling device for delivery of samples of fragrances, cosmetics, treatment products, and other materials is made by placing the sample between two film layers. At least one of the surfaces of the film that comes into contact with the sample contains a pattern of microstructures.

Description

SAMPLE PACKAGE

Field of the Invention

The invention is directed to articles for providing various products such as fragrances, cosmetics and the like. These devices have at least one surface that has been treated with a microreplication tool to form a pattern of microstructures on its surface.

Background of the Invention

The provision of products such as fragrances or other volatile materials in a compact and portable manner has long been desired. For example, in U.S. Patent No. 2,615,754, Lindenberg describes the use of an absorbent pad soaked in a perfume or other fragrance and a refϊllable sachet to hold the pad that may be removably secured to a person's clothing or some other article. More recently, interest has been focused on systems for providing samples of fragrances or other materials in promotional materials such as magazine advertisements, flyers and the like. Paciorek et al., in U.S. Patent No. 3,685,734, describe the use of a plastisol material in combination with the fragrance to stabilize and slowly release the fragrance when desired.

Microcapsules have also been used for the controlled delivery of fragrance samples. Microcapsules filled with fragrance are adhesively attached to two film layers. When the film layers are pulled apart the microcapsules rupture, releasing the fragrance. One example of this system is found in Charbonneau et al., U.S. Patent No. 4,925,517.

The use of microreplication technology to provide controlled surface characteristics to a number of materials is also known. The microstructures can provide a variety of properties to articles, such as controlled optical properties or texture. Examples of the use of microreplication technology may be found in Lu et al., U.S. Patent No. 5,175,030 and Reeves et al., U.S. Patent No. 5,508,084.

Summary of the Invention We have discovered, and the invention provides, a product delivery device that contains a bottom film layer having upper and lower surfaces; a top film layer having upper and lower surfaces; and a product sample between the top and bottom layers, wherein at least one film surface is microstructured. The top and bottom film layers can be generally secured to each other by an adhesive material or other sealing material. The product can be completely enclosed in an enclosure forming a seal that is impermeable to liquid and/or vapor. The microstructures employed in the sampler provide a textured surface that can be manipulated as desired, providing greater control of properties such as volume per unit area, rate of evaporation, liquid flow and the like.

Detailed Description of the Preferred Embodiment

The film layers that make up the top and bottom layers of the sampling device may be made of any material that is readily processable and that is resistant to, i.e., will not be dissolved or damaged by, or react with the product to be sampled. Examples of suitable materials include polymers, metal foils, coated paper, e.g. a polyester coated paper, and the like. Generally the film layers will have a thickness of about 12.5 to 312.5 μm, depending on the intended use of the device, preferably about 25 to 250 μm. Polymers are generally preferred as the material for the film layers of the sampling device. Suitable polymers include polyesters, polyolefins, polyacrylates, polyalkylacrylates, polyurethanes, polyamides, cellulose ethers and esters. Of these, polyesters and particularly polyethylene terephthalate are preferred. The top and bottom layers are preferably formed from the same material but may be formed from different materials. The films are typically clear but may be colored, tinted, or printed with a color, pattern or alphanumeric symbols.

At least one of the surfaces of the film layers that comes in contact with the product to be sampled has a microstructured surface. As used herein, "microstructure" refers to shapes and patterns that are of such small size that they generally cannot be obtained through use of standard machining or tooling equipment. The microstructures contemplated herein have a height of about 25 to 750 micrometers. This microstructured surface greatly increases the surface area of the film layer, thereby increasing the volume of liquid or other material that the sampler can hold. The use of a microstructured surface provides a number of benefits, such as the ability to hold a liquid in place, better control of the number of depressions, configuration and positioning of the pattern, availability of a wide variety of patterns, the ability to avoid use of an adhesive, greatly increased surface area of the sampler, and control of physical properties such as volume per unit of area, rate of evaporation, direction and rate of liquid flow, and so on. The microstructures also allows one to combine the benefits of a textured surface with that of a substantially planar film, due to the small size of the structures. One example of such a benefit is that the textured surface can maintain substantial contact with another film layer, such as a cover film. The microstructured surface can also provide desirable visual effects. For example, the microstructures can be provided to the film layer(s) so as to result in a pattern of structured and non-structured areas. Or, if desired, the precise protrusions and recesses of the microstructures can be tailored by combining microstructure, transparency and composition to create optical effects such as Moire patterning or "image shifting", where the image changes with viewing angle. In addition, the microstructures can provide the surface with a distinctive "feel" when touched by the user.

The microstructures that provide a textured surface to the film layer(s) can take any form desired that will not tear, puncture or otherwise harm the film layer. Generally, the microstructures will create depressions in the surface of the film layer that can hold the product to be sampled. The structures can be cones, cylinders, partial spheres, pyramids, inverted cones or pyramids having polygonal bases, concentric circles, intersecting v-shapes, rounded or box-shaped grooves and the like. The shape of these structures provide benefits in volume of material to be contained, as well as optional and aesthetic benefits that are superior to ordinary grooves, sandblasted indentations or irregular scoring patterns. Preferably, the pattern should not guide or channel the product out of the sampler, so that if a grooved pattern is used, for example, the grooves preferably do not run straight to the outer edges of the device. In fact, the microstructures can be arranged in such a manner that they hold or maintain the product in the sampler. A microstructure pattern that does not channel product out of the device is particularly advantageous for liquid products.

To prevent damage to the film, it may be desirable for certain parts of the microstructures to be rounded, such as the points of conical or pyramidal shapes. The entire surface of the layer may contain the microstructures, or they may be placed only in certain selected areas. For example, the microstructures may be only in the interior of the device, leaving the periphery smooth, or they may be in a pattern on the film such as stripes or blocks. Combinations of different microstructures creating different textures may be used on the surface of the film, if desired. One or more grooves may also be placed around the perimeter of the area where the fragrance or other product is to be applied in order to help prevent the product from coming into contact with the portion of the film that is to be bonded. Thus, in addition to the benefits provided by the shape of the individual depressions in the surface of the film layer, the overall placement and effect of the microstructures provides a distinct and separate benefit. Various designs such as logos or targets may be imparted on the planer film. A non-channeling pattern of microstructures may be imparted over the entire surface of the film, with target areas or logos placed at portions where the product is to be located. Thus, the film will be provided with an equal amount of processing throughout its length and width, while still providing the consumer with an informative or pleasing product delivery location. Having a pattern applied over the entire surface of the film provides for a more uniform film, with less buckling or variations in film texture or stretching properties.

While at least one of the surfaces of the film layers contains microstructures, it is possible for both internal surfaces of the film layers to be microstructured so long as they do not interact in such a way as to force the product out of the sampling area. If desired, patterns of microstructures may be incorporated around the periphery of the top and bottom films in such a manner that they interlock, thereby providing a way to bond the layers of the sampler without the need for an adhesive which may contaminate the product. The microstructured film layer(s) may be formed by cutting a series of grooves or other patterns into a solid sheeting, molding a sheeting with the desired precisely shaped structures thereon, or by molding precisely shaped structures and then embossing them into the desired material. Fabrication of microstructured materials is described in detail in U.S. Patent No. 5,508,084 to Reeves et al. and U.S. Patent No. 4,576,850 to Martens, both of which are incorporated herein by reference.

The top and bottom layers of the product delivery device are at least partially bonded together to assist in keeping the structure intact through machine handling operations, such as "tipping" the product sampler onto a backing sheet for distribution or insertion into magazines. Alternatively, a complete perimeter seal may be utilized in order to help prevent the product from migrating out of the sampler by leakage, evaporation or other means. Although the top and bottom layers will be held in their relative positions by the surface tension of a liquid product, some additional bonding is often required to hold the layers in place during manufacture, handling and application because the volume of the liquid can prevent the two film layers from touching. In this case, the layers are bonded together using a suitable adhesive material or by using interlocking patterns of microstructures. The bond should be sufficient to hold the top and bottom layers securely in place. In general, the bond can be around any desired portion of the perimeter of the sampler. The bonded areas may be continuous or may be made up of a series of discontinuous bonded areas along the perimeter of the sampler. In a preferred embodiment adhesive is placed continuously around one-half of the perimeter of the sample area. If the bond is around less than the full periphery of the sampler, no seal is formed and some of the product will escape from the sampler by evaporation, leakage or other means. If the perimeter of the top and bottom layers of the device are completely bonded, a seal is formed that will be vapor-impermeable so that no product can escape from the sampler.

Suitable adhesives include pressure sensitive adhesives, hot melt adhesives, heat activated adhesives and the like. Acrylate-type adhesives are generally preferred because of ease of use, and repositionability. Details on acrylate and other adhesives may be found in Skeist, Handbook of Adhesives. Van Nostrand Reinhold 1990.

Other layers may be incorporated into the device as necessary or desired. For example, an adhesive layer may be placed on the bottom of the sampler to adhere the sampling device to substrates such as a page of or insert for a magazine, newspaper, a paper card, a wall, textiles such as clothing or other surface. This adhesive may be a pressure sensitive adhesive or hot melt adhesive and may be repositionable. Repositionable devices are described in more detail in U.S. Patent No. 5,395,047 to Pendergrass, Jr. et al., which is incorporated herein by reference. Other types of layers that can be incorporated into the device include printing, tinted and other decorative layers such as reflective layers, textiles, textured layers, and the like.

Any product in liquid or powder form may be incorporated into the device of the present invention. Such products include but are not limited to cosmetics such as perfumes, perfume oils, powders, shadows, blushes, lipsticks, and treatment products; cleaners; pigments, pesticides; repellents, and so on. A liquid product, for example a fragrance or perfume may not be encapsulated or admixed with a plastisol type material or alternatively may be provided in liquid form, i.e., as the product or essential oil itself or in solution with a solvent such as alcohol or diethyl phthalate. The sampler of the invention is particularly well suited for the delivery of volatile materials such as perfumes, fragrances or essential oils. The articles of the invention are typically prepared by forming microstructures on the surface of the film or films to be used either on- or off-line, applying the product to the desired layer of the device by printing or another suitable method in an amount determined to fit the area available. The viscosity of the product can vary widely, although for ease of processability it is typically in the range of about 50 to 1500 cps. The viscosity of the product is an important factor in determining the amount of product that can be applied; less viscous products require greater surface area so that a smaller quantity will be used. When the product has been placed on the desired film layer, the adhesive is applied in the desired configuration if an adhesive is used; the top sheet is laminated to the bottom sheet, and the products are die cut into strips and rolled. Individual devices may then be cut from the rolls as desired, and either used as is or incorporated into other products such as magazine pages, storage devices, and so on.

The construction of the present device has particular advantage in the delivery of product by the ability to deliver more product in a relatively flat construction. Because more depth can be provided in the present construction for containment of liquid sample, a greater reservoir of material is provided. For example, in delivery of fragrances more liquid material is located in the sampler, which may allow for greater retention of the more volatile "high" notes of a fragrance, and better rendition of the desired fragrance.

The above specification provides a complete description of the manufacture and use of the device of the invention. Since many embodiments of the invention can be made without departing from the spirit and scope of the invention, the invention resides in the claims hereinafter appended.

Claims

WE CLAIM:
1. A product delivery device comprising:
(a) a bottom film layer having upper and lower surfaces;
(b) a top film layer having upper and lower surfaces; and (c) a product sample between the top and bottom film layers, wherein at least one film surface is microstructured.
2. The device of claim 1 wherein the product sample is a liquid.
3. The device of claim 1 wherein the product sample comprises a perfume oil.
4. The device of claim 1 wherein the thickness of the bottom film is about 12.5 to 312.5 ╬╝m.
5. The device of claim 1 wherein the microstructured surface comprises microstructures having a height of about 75 to 750 micrometers.
6. The device of claim 1 wherein the microstructured surface comprises multiple rounded depressions.
7. The device of claim 1 wherein the microstructured surface comprises depressions in the form of a series of concentric rings.
8. The device of claim 1 wherein the upper surface of the bottom film layer is microstructured.
9. The device of claim 8 wherein the microstructured surface comprises microstructures that maintain the product in the sampler.
10. The device of claim 1 wherein the periphery of the bottom film layer is smooth and the interior of the film layer is microstructured.
11. The device of claim 1 wherein the top film layer has a microstructured lower surface.
12. The device of claim 1 wherein the periphery of the lower surface of the top film layer is smooth and the interior of the film layer is microstructured.
13. The device of claim 1 wherein the top film layer has a microstructured lower surface, and the top and bottom film layers are aligned in such a manner that the microstructured surfaces interlock.
14. The device of claim 11 wherein the microstructured surfaces interlock around the periphery of the device.
15. The device of claim 1 wherein at least one of the film layers comprises polyethylene terephthalate.
16. The device of claim 1 wherein at least one of the film layers comprises polyvinyl chloride.
17. The device of claim 1 further comprising a film layer of adhesive on the lower surface of the bottom film layer.
18. The device of claim 15 wherein the adhesive comprises a pressure sensitive adhesive.
19. The device of claim 15 wherein the adhesive is repositionable.
20. A product delivery article comprising:
(a) a bottom film layer having a microstructured upper surface;
(b) a top film layer; and (c) a product sample between the top and bottom film layers, wherein the top film layer is secured to the bottom film layer in such a manner as to form a partial enclosure around the product sample.
PCT/US1998/004463 1997-03-13 1998-03-06 Sample package WO1998040285A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US4270197 true 1997-03-13 1997-03-13
US60/042,701 1997-03-13

Publications (1)

Publication Number Publication Date
WO1998040285A1 true true WO1998040285A1 (en) 1998-09-17

Family

ID=21923310

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/004463 WO1998040285A1 (en) 1997-03-13 1998-03-06 Sample package

Country Status (1)

Country Link
WO (1) WO1998040285A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6811766B1 (en) 1997-10-21 2004-11-02 Amersham Health As Ultrasound imaging with contrast agent targeted to microvasculature and a vasodilator drug
US8303932B2 (en) 2001-08-17 2012-11-06 Mallinckrodt Llc Multicomponent assemblies having enhanced binding properties for diagnosis and therapy

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785556A (en) * 1971-08-05 1974-01-15 Horton Davis Mccaleb & Lucas Packaging apparatus, method and product
US4094119A (en) * 1977-03-18 1978-06-13 The Risdon Manufacturing Company Method of making a product for dispensing a volatile substance
US4130245A (en) * 1977-09-29 1978-12-19 Will Ross, Inc. Liquid dispensing package
US4518643A (en) * 1983-07-25 1985-05-21 Ethyl Corporation Plastic film
EP0525530A2 (en) * 1991-07-16 1993-02-03 Thermedics, Inc. Perfume samplers and process for their manufacture
US5395047A (en) * 1993-05-24 1995-03-07 Minnesota Mining And Manufacturing Company Repositionable device for delivery of volatile materials

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785556A (en) * 1971-08-05 1974-01-15 Horton Davis Mccaleb & Lucas Packaging apparatus, method and product
US4094119A (en) * 1977-03-18 1978-06-13 The Risdon Manufacturing Company Method of making a product for dispensing a volatile substance
US4130245A (en) * 1977-09-29 1978-12-19 Will Ross, Inc. Liquid dispensing package
US4518643A (en) * 1983-07-25 1985-05-21 Ethyl Corporation Plastic film
EP0525530A2 (en) * 1991-07-16 1993-02-03 Thermedics, Inc. Perfume samplers and process for their manufacture
US5395047A (en) * 1993-05-24 1995-03-07 Minnesota Mining And Manufacturing Company Repositionable device for delivery of volatile materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6811766B1 (en) 1997-10-21 2004-11-02 Amersham Health As Ultrasound imaging with contrast agent targeted to microvasculature and a vasodilator drug
US8303932B2 (en) 2001-08-17 2012-11-06 Mallinckrodt Llc Multicomponent assemblies having enhanced binding properties for diagnosis and therapy

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