Method for rapidly infiltrating condom with large-dose lubricating liquid
Through the three-injection method and pre-impregnation guide wire technology, the problem of low penetration efficiency of condom lubricant is solved, and the rapid penetration and uniform distribution of large doses of lubricant are achieved, reducing inventory pressure and improving product quality and user experience.
Patent Information
- Application Number
- CN202511011359.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-22
- Publication Date
- 2025-09-16
AI Technical Summary
The low penetration efficiency of lubricants in traditional condom production leads to high inventory pressure and difficulty in effective penetration of large doses of lubricants, affecting user experience and packaging quality.
A three-step injection method is used to achieve rapid penetration and uniform distribution of lubricant through a combination of pre-wetted guide lines and lubricants of different viscosities. This involves forming pre-wetted guide lines on the condom surface, adding a large amount of lubricant to the bottom of the package, and finally forming a covering layer inside the package.
It significantly shortens the lubricant penetration time, increases the loading capacity and uniformity of the lubricant in the condom, reduces inventory pressure and improves user experience.
Smart Images
Figure CN120646340A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of condom production, in particular to a method for quickly soaking condoms with a large dose of lubricating liquid. Background Art
[0002] In the condom production process, the penetration efficiency of lubricants is a key factor restricting production cycle and inventory turnover. The traditional production process has the following technical bottlenecks:
[0003] 1. Low penetration efficiency: Currently, the industry generally adopts the method of adding lubricant once during the packaging stage. Due to the close contact between the layers of the sleeve after curling, the lubricant needs to rely on natural diffusion to penetrate. It usually takes 2-6 months to achieve the ideal distribution state, resulting in huge product inventory pressure.
[0004] 2. Conflicting Needs for Larger Condoms: Modern condom designs tend to use more lubricant to enhance the user experience. However, if the lubricant can't effectively penetrate the condom, increasing the dosage won't achieve the desired effect. Furthermore, due to the combined effects of the bare condom's height and the viscosity of the lubricant, adding a large amount of lubricant can easily cause the lubricant to overflow from the packaging, leading to heat seal failure and increased scrap rates. Existing technologies struggle to address the technical challenges of rapid penetration and subsequent packaging of large amounts of lubricant. Summary of the Invention
[0005] The purpose of the present invention is to provide a method for quickly soaking condoms with a large amount of lubricating liquid. By three injections, a large amount of lubricating liquid is injected into the condom and the lubricating liquid quickly penetrates into the interior of the condom. Small changes can achieve big changes, shorten the penetration time of the lubricating liquid, reduce the inventory pressure of condoms, and ensure the quality of the product.
[0006] The present invention provides the following technical solutions:
[0007] A method for quickly soaking a condom with a large dose of lubricating liquid comprises the following steps:
[0008] First injection: unfold the bare condom that has passed the inspection, and inject a small amount of the first lubricant onto the surface of the bare condom to form a pre-wetting guide line to achieve pre-wetting and obtain a pre-wetted bare condom. The pre-wetting guide line can provide a centripetal penetration path for the first lubricant to overcome the resistance of the winding layer;
[0009] Second injection: inject a large amount of the second lubricant into the bottom of the condom package. The second lubricant is added to the bottom of the condom package, and the injection amount is increased without affecting the packaging of the product.
[0010] The third injection: put the pre-soaked bare condom into the condom package, inject the third lubricant on the surface of the pre-soaked bare condom, and then heat-seal the condom package to form a sandwich structure of "lubricant-bare condom-lubricant". The third lubricant forms a covering layer and will quickly penetrate into the condom along the pre-soaked guide line.
[0011] As a further solution of the present invention, a small amount of the first lubricating liquid is injected into the surface of the bare condom by means of mechanical spraying or manual application.
[0012] As a further solution of the present invention: the pre-soaked guide line is located on the outside of the bare condom.
[0013] As a further solution of the present invention: the pre-wetted guide wire is "U"-shaped, "I"-shaped, "II-shaped" or "III-shaped".
[0014] As a further solution of the present invention, the bare condoms that have passed the inspection are unfolded on the corresponding mold, which is easy to operate.
[0015] As a further solution of the present invention: the viscosity of the second lubricating liquid is 40-300 centipoise, and the viscosity of the third lubricating liquid is 40-600 centipoise.
[0016] As a further solution of the present invention, a second lubricating liquid is injected into the bottom of the condom package using a liquid spray nozzle.
[0017] As a further solution of the present invention: a blister device is used to place the pre-soaked bare condom into the condom package, and a liquid spray nozzle is used to inject the third lubricating liquid.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] The present invention achieves the purpose of adding a large dose of lubricant into the condom package and quickly soaking the condom body with the lubricant through three injections, achieving big changes with small modifications, increasing the lubricant loading capacity, accelerating the lubricant soaking speed, improving the condom user experience, and alleviating condom inventory pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Schematic diagram of the process of quickly wetting a condom with a large dose of lubricating liquid according to an embodiment of the present invention.
[0021] Figure 2 Schematic diagram of the "U"-shaped pre-wetting guide line.
[0022] Figure 3 This is a schematic diagram of the "I" type pre-wetting guide line. DETAILED DESCRIPTION
[0023] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.
[0024] The first liquid injection of the present invention uses a small amount of lubricating liquid to form a pre-wetting guide line. The principle is: when the surface of an object is initially dry, there may be tiny concave-convex structures or adsorbed air on its surface, resulting in a large contact angle between the liquid and the surface (poor wettability). The liquid easily shrinks into droplets, encounters greater resistance when flowing, and flows at a slower speed. After wetting the surface with a small amount of liquid in advance, the liquid can fill the tiny gaps on the surface and expel air, and change the wetting state of the surface (the contact angle decreases), thereby enhancing the surface's affinity for the liquid. When liquid is added subsequently, the new liquid can merge with the already wetted surface more quickly, reducing the shrinkage resistance caused by surface tension, thereby accelerating the flow rate. The act or process of wetting the surface in advance is usually called "pre-wetting" in the fields of physics and chemistry. Its function is to enhance the wetting effect of the subsequent liquid on the surface by changing the state of the solid surface in advance. The second injection is to add a large dose of lubricant to the bottom of the condom package, and after placing the pre-soaked bare condom, the third injection is to add a small amount of lubricant to the surface of the bare condom, which can avoid the lubricant overflowing and affecting the heat sealing effect, and can achieve the purpose of large doses of lubricant.
[0025] The specific implementation of the present invention is described in detail below with reference to specific embodiments.
[0026] Example 1: Standard U-shaped pre-infiltration guide wire pattern (large dose type)
[0027] See Figure 1-Figure 2 , first injection:
[0028] Use condom lubricant with a viscosity of 60 centipoise.
[0029] Apply "U" shaped pre-wetted guide wire on the expansion sleeve (see Figure 2 , line width 1.5mm, length 120mm), coating amount: 150mg.
[0030] Curled into a pre-soaked condom.
[0031] Second injection:
[0032] Inject lubricant (viscosity 40 centipoise) into the bottom of the condom package.
[0033] Filling amount: 1000mg.
[0034] The third injection:
[0035] After placing the pre-soaked condom, inject lubricant (viscosity 60 centipoise) into the top
[0036] Filling amount: 650mg.
[0037] Effect: After 72 hours of autopsy, the lubricant penetration rate reached 80%, and the error of the lubricant distribution uniformity in various parts of the condom was no more than 10%.
[0038] Example 2: Standard Type I Pre-infiltrated Guide Wire Pattern (Large Dose Type)
[0039] See Figure 1 and Figure 3 , First injection: Use condom lubricant, viscosity: 60 centipoise.
[0040] Coat one or more "I" type pre-wetted guide wires on the expansion sleeve (see Figure 3 , evenly distributed on the sleeve), coating amount: 150mg.
[0041] Curled into a pre-soaked condom.
[0042] Second injection:
[0043] Inject lubricating liquid (viscosity 210 centipoise) into the bottom of the condom packaging.
[0044] Filling amount: 1000mg.
[0045] The third injection:
[0046] After placing the pre-soaked condom, inject lubricant (viscosity 430 centipoise) into the top
[0047] Filling amount: 650mg.
[0048] Effect: The penetration rate reaches 75% in 72 hours, and the uniformity of the lubricant distribution in various parts of the condom is no more than 15%.
[0049] Example 3: Hybrid Pre-infiltration Guide Wire Mode (Large Dose Type)
[0050] Use condom lubricant with a viscosity of 60 centipoise.
[0051] Coat the "U"-shaped and "I"-shaped pre-wetted guide wires on the deployment sleeve, with a coating amount of 150 mg.
[0052] Curled into a pre-soaked condom.
[0053] Second injection:
[0054] Inject lubricant (viscosity 300 centipoise) into the bottom of the condom package.
[0055] Filling amount: 1000mg.
[0056] The third injection:
[0057] After placing the pre-soaked condom, inject lubricant (viscosity 600 centipoise) into the top
[0058] Filling amount: 650mg.
[0059] Effect: The penetration rate reaches 60% in 72 hours, and the uniformity of lubricant distribution in various parts of the condom is no more than 30%.
[0060] The equipment required for this invention can be retrofitted into existing packaging lines by simply adding a second lubricant spray module. The pre-wetting of the guide line can be done manually or with a small device, without disrupting normal condom production. This method can increase the lubricant's carrying capacity within condoms, effectively reducing the time it takes for the lubricant to penetrate the condoms, alleviating inventory pressures and accommodating the production of condoms with varying lubricant dosages.
[0061] When the condom is packaged in a conventional square bag with double-sided aluminum film, the method of the present invention can also be used.
[0062] It should be noted that, in the present invention, unless otherwise expressly specified or limited, the terms "fixed" and "set" should be understood in a broad sense. For example, they can refer to welded connections, bolted connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise expressly specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0063] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A method for rapidly wetting a condom with a large amount of lubricating liquid, characterized in that: The following steps are involved: First injection: unfold the bare condom that has passed the test, inject a small amount of the first lubricating liquid onto the surface of the bare condom to form a pre-wetting guide line, and obtain a pre-wetted bare condom; Second injection: inject a large dose of the second lubricant into the bottom of the condom package; The third injection: put the pre-soaked bare condom into the condom package, inject the third lubricating liquid on the surface of the pre-soaked bare condom, and then heat-seal the condom package.
2. The method for rapidly wetting a condom with a large dose of lubricating liquid according to claim 1, characterized in that: A small amount of the first lubricating liquid is injected into the surface of the bare condom by a mechanical device or an artificial liquid application method.
3. The method for quickly wetting a condom with a large dose of lubricating liquid according to claim 1 or 2, characterized in that: The pre-soaked guide line is located on the outside of the bare condom.
4. The method for rapidly wetting a condom with a large dose of lubricating liquid according to claim 3, characterized in that: The pre-wet guide wire is "U" type, "I" type, "II" type or "III" type.
5. The method for rapidly wetting a condom with a large amount of lubricating liquid according to claim 3, characterized in that: The viscosity of the second lubricating liquid is 40-300 centipoise, and the viscosity of the third lubricating liquid is 40-600 centipoise.
6. The method for rapidly wetting a condom with a large dose of lubricating liquid according to claim 1, characterized in that: The second lubricating liquid is injected into the bottom of the condom package using a liquid spray nozzle.
7. The method for quickly wetting a condom with a large dose of lubricating liquid according to claim 1 or 6, characterized in that: The pre-soaked bare condoms are placed into the condom package using a blister packing machine.